US20120279095A1 - Straight taper dipper - Google Patents
Straight taper dipper Download PDFInfo
- Publication number
- US20120279095A1 US20120279095A1 US13/452,380 US201213452380A US2012279095A1 US 20120279095 A1 US20120279095 A1 US 20120279095A1 US 201213452380 A US201213452380 A US 201213452380A US 2012279095 A1 US2012279095 A1 US 2012279095A1
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- United States
- Prior art keywords
- inlet
- outlet
- reference plane
- dipper
- degrees
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 241000602850 Cinclidae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device
- E02F3/4075—Dump doors; Control thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
- E02F3/60—Buckets, scrapers, or other digging elements
Definitions
- the present invention generally relates to dippers for surface mining.
- Typical power shovels or excavators use a bucket or dipper assembly to scoop earthen material from horizontal or vertical faces.
- a conventional power shovel has a boom, and the dipper is mounted on the boom via a crowd mechanism.
- the crowd mechanism includes a crowd pinion on the boom, and crowd rack as part of the dipper handle which pivots about the pinion and which moves translationally along the pinion.
- the dipper is mounted on the end of the handle.
- the bucket or dipper is normally provided with sharp teeth to provide a digging action against the surface being worked and further includes a cavity for collecting the material so removed. Once the earthen material is received within the dipper, the dipper is typically moved to another location for transfer of the material. The material is usually discharged into a dump truck, onto a conveyor, or merely onto a pile.
- a dipper has an inlet and an outlet and includes a front wall and an opposite back wall extending between the inlet and the outlet.
- a first reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall.
- the front wall may have a substantially linear inner surface and may be arranged relative to the first reference plane at an angle of at least 0 degrees and no more than 3 degrees.
- the dipper further includes two side walls connected between the front wall and the back wall and extending between the inlet and the outlet.
- a second reference plane extends from the inlet to the outlet and is positioned between the side walls.
- a lip is coupled to at least the front wall and extends outwardly from the inlet.
- the back wall may taper outwardly relative to the first reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees, and each of the side walls may taper outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees.
- each of the side walls of the dipper may taper outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees.
- the lip has opposite side surfaces, and each of the side surfaces of the lip may taper outwardly relative to the second reference plane from the inlet toward the outer surface at an angle greater than 0 degrees and no more than 30 degrees.
- an inlet reference plane is defined at the inlet, and a front wall reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall.
- the front wall may have a substantially linear inner surface and be arranged relative to the front wall reference plane at an angle of at least 0 degrees and no more than 3 degrees.
- the inlet has an inlet area in the inlet reference plane, and the outlet has an outlet area in an outlet reference plane substantially parallel to the inlet reference plane.
- the front wall, the back wall, and the two side walls may be arranged such that the outlet area is at least 3 percent and no more than 25 percent greater than the inlet area.
- FIG. 1 is a perspective view of a dipper according to the invention.
- FIG. 2 is a top view of the dipper shown in FIG. 1 .
- FIG. 3 is a right side view of the dipper shown in FIG. 1 .
- FIG. 4 is a front view of the dipper shown in FIG. 1 .
- FIG. 5 is a section view taken along line 5 - 5 in FIG. 3 .
- FIG. 6 is a section view taken along line 6 - 6 in FIG. 4 .
- FIG. 7 is a representative view comparing an inlet area to an outlet area of the dipper shown in FIG. 1 .
- FIG. 1 shows a dipper 10 for use with a power shovel or another piece of mining equipment.
- the dipper 10 includes a front wall 14 , a back wall 18 , a left side wall 22 , and a right side wall 24 and defines an inlet 28 and an outlet 32 .
- a lip 36 is coupled to the front wall 14 , the left side wall 22 , and the right side wall 24 and extends forward of the front wall 14 .
- a heel 38 of the dipper is defined on the front wall 14 adjacent the outlet 32 and includes a latch portion 39 (see FIGS. 2-6 ) for receiving the latch of a dipper door (not shown).
- FIGS. 2-4 show alternate views of the dipper 10 .
- FIGS. 1-6 show an x-axis in a side-to-side direction, a y-axis in an inlet-to-outlet direction, and a z-axis in a front-to-back direction. These directions will be referenced throughout this description for the purpose of illustration and should not be regarded as limiting.
- a side wall reference plane 40 is defined in the y-z plane and intersects the front wall 14 and the back wall 18 (e.g., in the center).
- the left side wall 22 defines (see FIG. 2 ) a planar portion and two curved portions that connect the planar portion of the left side wall 22 to the front wall 14 and the back wall 18 .
- the left side wall 22 is tapered or skewed outwardly from the inlet 28 to the outlet 32 and defines a left wall plane 44 that parallels the planar portion and that is angled with respect to the side wall reference plane 40 at a left wall angle 46 .
- the left wall plane 44 may be angled with respect to the side wall reference plane 40 at between about zero degrees and about thirty degrees (0° ⁇ x ⁇ 30°). In some embodiments, the left wall plane 44 may be angled with respect to the side wall reference plane 40 at between about one degree and about ten degrees (1° ⁇ x ⁇ 10°). In the illustrated embodiment, the left wall angle 46 is about three degrees (3°).
- the right side wall 24 defines (see FIG. 2 ) a planar portion and two curved portions that connect the planar portion of the right side wall 24 to the front wall 14 and the back wall 18 .
- the right side wall 24 is tapered or skewed outwardly from the inlet 28 to the outlet 32 and defines a right wall plane 48 that parallels the planar portion and that is angled with respect to the side wall reference plane 40 at a right wall angle 52 .
- the right wall plane 48 may be angled with respect to the side wall reference plane 40 at between about zero degrees and about thirty degrees (0° ⁇ x ⁇ 30°). In some embodiments, the right wall plane 48 may be angled with respect to the side wall reference plane 40 at between about one degree and about ten degrees (1° ⁇ x ⁇ 10°). In the illustrated embodiment, the right wall angle 52 is about three degrees (3°).
- FIG. 5 shows the lip 36 coupled to the front wall 14 , the left side wall 22 , and the right side wall 24 .
- the lip 36 defines an outer dimension 56 along the x-axis, a left lip plane 60 running parallel to the left side of the lip 36 , and a right lip plane 68 running parallel to the right side of the lip 36 .
- the left lip plane 60 is arranged at a left lip angle 64 with respect to the side wall reference plane 40 .
- the left lip angle 64 may be between about zero degrees and about thirty degrees (0° ⁇ x ⁇ 30°). In some embodiments, the left lip angle 64 is between about one degree and about ten degrees (1° ⁇ x ⁇ 10°). In the illustrated embodiment, the left lip angle 64 is about zero degrees (0°).
- the right lip plane 68 is arranged at a right lip angle 72 with respect to the side wall reference plane 40 .
- the right lip angle 72 may be between about zero degrees and about thirty degrees (0° ⁇ x ⁇ 30°). In some embodiments, the right lip angle 72 is between about one degree and about ten degrees (1° ⁇ x ⁇ 10°). In the illustrated embodiment, the right lip angle 72 is about zero degrees (0°).
- the lip 36 may be arranged with the outer dimension 56 of the lip 36 larger than a comparative outer dimension at the outlet 32 of the dipper 10 so that the outlet 32 or heel 38 of the dipper 10 does not plow or rake though the material being mined, which would increase the wear on the dipper 10 and increase the force required to move the dipper 10 through the material.
- the left and right lip angles 64 , 72 affect the outer dimension 56 and can be manipulated to provide clearance for the outlet 32 , as desired.
- a floor reference plane 76 is defined in the x-y plane.
- a front/back wall reference plane 80 is positioned between the front wall 14 and the back wall 18 , and angled with respect to the floor reference plane 76 at about ten degrees (10°).
- the front wall 14 defines a straight surface from the inlet 28 to the outlet 32 (as shown in FIG. 6 ).
- the front wall 14 is curved (as shown in FIG. 2 ).
- the line from the inlet 28 to the outlet 32 is substantially straight, as shown in FIG. 6 .
- a front wall line 84 is arranged relative to the front/back wall reference plane 80 at a front wall angle 88 .
- the front wall angle 88 may be greater than or equal to zero degrees (x ⁇ 0°). In some embodiments, the front wall angle 88 is between about zero degrees and about three degrees (0° ⁇ x ⁇ 3°). In the illustrated embodiment, the front wall angle 88 is about zero degrees (0°).
- the lip 36 is in line or parallel with the front wall 14 . In other embodiments, the lip 36 could be skewed or angled relative to the front wall 14 , as desired.
- the back wall 18 defines (see FIG. 2 ) a planar portion, and two curved portions that connect the back wall 18 to the left side wall 22 and the right side wall 24 .
- a straight surface is defined from the inlet 28 to the outlet 32 (as shown in FIG. 6 ).
- a back wall line 92 is angled or skewed relative to the front/back wall reference plane 80 at a back wall angle 96 .
- the back wall angle 96 may be between about zero degrees and about thirty degrees (0° ⁇ x ⁇ 30°). In some embodiments, the back wall angle 96 is between about one degree and about ten degrees (1° ⁇ x ⁇ 10°). In the illustrated embodiment, the back wall angle 96 is about five degrees (5°).
- an inlet plane 100 is defined generally perpendicular to the floor reference plane 76 at the inlet 28 .
- An inlet area 104 for the dipper 10 is defined in the inlet plane 100 . That is to say, the front wall 14 , the back wall 18 , the left side wall 22 , and the right side wall 26 define an inlet perimeter in the inlet plane 100 , and the area within the inlet perimeter defines the inlet area 104 in the inlet plane 100 .
- An outlet plane 108 is defined parallel to the inlet plane 100 (and generally perpendicular to the floor reference plane 76 ) at the outlet 32 .
- An outlet area 112 for the dipper 10 (e.g., at the door) is defined in the outlet plane 108 . That is to say, the front wall 14 , the back wall 18 , the left side wall 22 , and the right side wall 26 define an outlet perimeter in the outlet plane 108 , and the area within the outlet perimeter defines the outlet area 112 in the outlet plane 108 .
- the outlet area 112 is larger than the inlet area 104 (see FIG. 7 ).
- the outlet area 112 may be between about three percent and about twenty-five percent (3% ⁇ x ⁇ 25%) larger than the inlet area 104 .
- the outlet area 112 may be more than about four percent (4%) larger than the inlet area 104 .
- the outlet area 112 may be about eight percent to about nine percent (8% ⁇ x ⁇ 9%) larger than the inlet area 104 .
- the outlet area 112 is about ten percent (10%) larger than the inlet area 104 .
- the inventive arrangement provides a dipper 10 that improves performance in digging.
- the dipper 10 may have improved fill, dump and/or full/dump cycle time.
- the dipper 10 may have reduced drag during digging.
- the dipper 10 may be advantageous for oil sands digging. Oil sands expand after being unearthed. The increased volume of the dipper 10 toward the outlet 32 of the dipper 10 allows the oil sands to expand within the dipper 10 while a digging action is occurring, and the oil sands will not be compacted within the dipper 10 . Typically, oil sands expand about four percent (4%) in volume during a digging action (e.g., 30 seconds). The straight tapered design of the dipper 10 allows expansion without compaction and/or improves digging characteristics and efficiency. The dipper 10 may also be used to remove/mine other materials, such as, for example, copper, iron ore, overburden material, etc.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Fodder In General (AREA)
- Shovels (AREA)
Abstract
A dipper having an inlet and an outlet, and an inlet reference plane being defined at the inlet. The dipper includes a front wall and an opposite back wall extending between the inlet and the outlet. A front wall reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall. The dipper further includes two side walls connected between the front wall and the back wall and extending between the inlet and the outlet. The inlet has an inlet area in the inlet reference plane, wherein the outlet has an outlet area in an outlet reference plane substantially parallel to the inlet reference plane. The front wall, the back wall, and the two side walls are arranged such that the outlet area is at least 3 percent and no more than 25 percent greater than the inlet area.
Description
- This application claims the benefit of U.S. Provisional Patent Application No. 61/481,615, filed May 2, 2011, the entire contents of which are hereby incorporated by reference.
- The present invention generally relates to dippers for surface mining.
- Typical power shovels or excavators use a bucket or dipper assembly to scoop earthen material from horizontal or vertical faces. A conventional power shovel has a boom, and the dipper is mounted on the boom via a crowd mechanism. The crowd mechanism includes a crowd pinion on the boom, and crowd rack as part of the dipper handle which pivots about the pinion and which moves translationally along the pinion. The dipper is mounted on the end of the handle. The bucket or dipper is normally provided with sharp teeth to provide a digging action against the surface being worked and further includes a cavity for collecting the material so removed. Once the earthen material is received within the dipper, the dipper is typically moved to another location for transfer of the material. The material is usually discharged into a dump truck, onto a conveyor, or merely onto a pile.
- In one independent embodiment, a dipper has an inlet and an outlet and includes a front wall and an opposite back wall extending between the inlet and the outlet. A first reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall. The front wall may have a substantially linear inner surface and may be arranged relative to the first reference plane at an angle of at least 0 degrees and no more than 3 degrees. The dipper further includes two side walls connected between the front wall and the back wall and extending between the inlet and the outlet. A second reference plane extends from the inlet to the outlet and is positioned between the side walls. A lip is coupled to at least the front wall and extends outwardly from the inlet. The back wall may taper outwardly relative to the first reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees, and each of the side walls may taper outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees.
- In another independent embodiment of a dipper, each of the side walls of the dipper may taper outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than 0 degrees and no more than 30 degrees. The lip has opposite side surfaces, and each of the side surfaces of the lip may taper outwardly relative to the second reference plane from the inlet toward the outer surface at an angle greater than 0 degrees and no more than 30 degrees.
- In yet another independent embodiment of the dipper, an inlet reference plane is defined at the inlet, and a front wall reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall. The front wall may have a substantially linear inner surface and be arranged relative to the front wall reference plane at an angle of at least 0 degrees and no more than 3 degrees. The inlet has an inlet area in the inlet reference plane, and the outlet has an outlet area in an outlet reference plane substantially parallel to the inlet reference plane. The front wall, the back wall, and the two side walls may be arranged such that the outlet area is at least 3 percent and no more than 25 percent greater than the inlet area.
- Other independent aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
-
FIG. 1 is a perspective view of a dipper according to the invention. -
FIG. 2 is a top view of the dipper shown inFIG. 1 . -
FIG. 3 is a right side view of the dipper shown inFIG. 1 . -
FIG. 4 is a front view of the dipper shown inFIG. 1 . -
FIG. 5 is a section view taken along line 5-5 inFIG. 3 . -
FIG. 6 is a section view taken along line 6-6 inFIG. 4 . -
FIG. 7 is a representative view comparing an inlet area to an outlet area of the dipper shown inFIG. 1 . - Before any independent embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other independent embodiments and of being practiced or of being carried out in various ways.
-
FIG. 1 shows adipper 10 for use with a power shovel or another piece of mining equipment. Thedipper 10 includes afront wall 14, aback wall 18, aleft side wall 22, and aright side wall 24 and defines aninlet 28 and anoutlet 32. Alip 36 is coupled to thefront wall 14, theleft side wall 22, and theright side wall 24 and extends forward of thefront wall 14. Aheel 38 of the dipper is defined on thefront wall 14 adjacent theoutlet 32 and includes a latch portion 39 (seeFIGS. 2-6 ) for receiving the latch of a dipper door (not shown).FIGS. 2-4 show alternate views of the dipper 10. -
FIGS. 1-6 show an x-axis in a side-to-side direction, a y-axis in an inlet-to-outlet direction, and a z-axis in a front-to-back direction. These directions will be referenced throughout this description for the purpose of illustration and should not be regarded as limiting. - With reference to
FIG. 5 , a sidewall reference plane 40 is defined in the y-z plane and intersects thefront wall 14 and the back wall 18 (e.g., in the center). Theleft side wall 22 defines (seeFIG. 2 ) a planar portion and two curved portions that connect the planar portion of theleft side wall 22 to thefront wall 14 and theback wall 18. As shown inFIG. 5 , theleft side wall 22 is tapered or skewed outwardly from theinlet 28 to theoutlet 32 and defines aleft wall plane 44 that parallels the planar portion and that is angled with respect to the sidewall reference plane 40 at aleft wall angle 46. Theleft wall plane 44 may be angled with respect to the sidewall reference plane 40 at between about zero degrees and about thirty degrees (0°≦x≦30°). In some embodiments, theleft wall plane 44 may be angled with respect to the sidewall reference plane 40 at between about one degree and about ten degrees (1°≦x≦10°). In the illustrated embodiment, theleft wall angle 46 is about three degrees (3°). - The
right side wall 24 defines (seeFIG. 2 ) a planar portion and two curved portions that connect the planar portion of theright side wall 24 to thefront wall 14 and theback wall 18. As shown inFIG. 5 , theright side wall 24 is tapered or skewed outwardly from theinlet 28 to theoutlet 32 and defines aright wall plane 48 that parallels the planar portion and that is angled with respect to the sidewall reference plane 40 at aright wall angle 52. Theright wall plane 48 may be angled with respect to the sidewall reference plane 40 at between about zero degrees and about thirty degrees (0°≦x≦30°). In some embodiments, theright wall plane 48 may be angled with respect to the sidewall reference plane 40 at between about one degree and about ten degrees (1°≦x≦10°). In the illustrated embodiment, theright wall angle 52 is about three degrees (3°). -
FIG. 5 shows thelip 36 coupled to thefront wall 14, theleft side wall 22, and theright side wall 24. Thelip 36 defines anouter dimension 56 along the x-axis, aleft lip plane 60 running parallel to the left side of thelip 36, and aright lip plane 68 running parallel to the right side of thelip 36. - The
left lip plane 60 is arranged at aleft lip angle 64 with respect to the sidewall reference plane 40. Theleft lip angle 64 may be between about zero degrees and about thirty degrees (0°≦x≦30°). In some embodiments, theleft lip angle 64 is between about one degree and about ten degrees (1°≦x≦10°). In the illustrated embodiment, theleft lip angle 64 is about zero degrees (0°). - The
right lip plane 68 is arranged at aright lip angle 72 with respect to the sidewall reference plane 40. Theright lip angle 72 may be between about zero degrees and about thirty degrees (0°≦x≦30°). In some embodiments, theright lip angle 72 is between about one degree and about ten degrees (1°≦x≦10°). In the illustrated embodiment, theright lip angle 72 is about zero degrees (0°). - Further, in some embodiments, the
lip 36 may be arranged with theouter dimension 56 of thelip 36 larger than a comparative outer dimension at theoutlet 32 of thedipper 10 so that theoutlet 32 orheel 38 of thedipper 10 does not plow or rake though the material being mined, which would increase the wear on thedipper 10 and increase the force required to move thedipper 10 through the material. The left and right lip angles 64, 72 affect theouter dimension 56 and can be manipulated to provide clearance for theoutlet 32, as desired. - With respect to
FIG. 6 , afloor reference plane 76 is defined in the x-y plane. A front/backwall reference plane 80 is positioned between thefront wall 14 and theback wall 18, and angled with respect to thefloor reference plane 76 at about ten degrees (10°). - The
front wall 14 defines a straight surface from theinlet 28 to the outlet 32 (as shown inFIG. 6 ). In the x-axis (generally), thefront wall 14 is curved (as shown inFIG. 2 ). In the illustrated construction, throughout the curved portion of thefront wall 14, the line from theinlet 28 to theoutlet 32 is substantially straight, as shown inFIG. 6 . Afront wall line 84 is arranged relative to the front/backwall reference plane 80 at afront wall angle 88. Thefront wall angle 88 may be greater than or equal to zero degrees (x≧0°). In some embodiments, thefront wall angle 88 is between about zero degrees and about three degrees (0°≦x≦3°). In the illustrated embodiment, thefront wall angle 88 is about zero degrees (0°). - In the illustrated embodiment (see
FIG. 6 ), thelip 36 is in line or parallel with thefront wall 14. In other embodiments, thelip 36 could be skewed or angled relative to thefront wall 14, as desired. - The
back wall 18 defines (seeFIG. 2 ) a planar portion, and two curved portions that connect theback wall 18 to theleft side wall 22 and theright side wall 24. A straight surface is defined from theinlet 28 to the outlet 32 (as shown inFIG. 6 ). Aback wall line 92 is angled or skewed relative to the front/backwall reference plane 80 at aback wall angle 96. Theback wall angle 96 may be between about zero degrees and about thirty degrees (0°≦x≦30°). In some embodiments, theback wall angle 96 is between about one degree and about ten degrees (1°≦x≦10°). In the illustrated embodiment, theback wall angle 96 is about five degrees (5°). - With continued reference to
FIG. 6 , aninlet plane 100 is defined generally perpendicular to thefloor reference plane 76 at theinlet 28. Aninlet area 104 for thedipper 10 is defined in theinlet plane 100. That is to say, thefront wall 14, theback wall 18, theleft side wall 22, and the right side wall 26 define an inlet perimeter in theinlet plane 100, and the area within the inlet perimeter defines theinlet area 104 in theinlet plane 100. - An
outlet plane 108 is defined parallel to the inlet plane 100 (and generally perpendicular to the floor reference plane 76) at theoutlet 32. Anoutlet area 112 for the dipper 10 (e.g., at the door) is defined in theoutlet plane 108. That is to say, thefront wall 14, theback wall 18, theleft side wall 22, and the right side wall 26 define an outlet perimeter in theoutlet plane 108, and the area within the outlet perimeter defines theoutlet area 112 in theoutlet plane 108. - As a result of arrangement of the
front wall 14, theback wall 18, theleft side wall 22, and theright side wall 24, theoutlet area 112 is larger than the inlet area 104 (seeFIG. 7 ). Theoutlet area 112 may be between about three percent and about twenty-five percent (3%≦x≦25%) larger than theinlet area 104. In some embodiments, theoutlet area 112 may be more than about four percent (4%) larger than theinlet area 104. In other embodiments, theoutlet area 112 may be about eight percent to about nine percent (8%≦x≦9%) larger than theinlet area 104. In the illustrated embodiment, theoutlet area 112 is about ten percent (10%) larger than theinlet area 104. - The inventive arrangement provides a
dipper 10 that improves performance in digging. For example, thedipper 10 may have improved fill, dump and/or full/dump cycle time. Thedipper 10 may have reduced drag during digging. - The
dipper 10 may be advantageous for oil sands digging. Oil sands expand after being unearthed. The increased volume of thedipper 10 toward theoutlet 32 of thedipper 10 allows the oil sands to expand within thedipper 10 while a digging action is occurring, and the oil sands will not be compacted within thedipper 10. Typically, oil sands expand about four percent (4%) in volume during a digging action (e.g., 30 seconds). The straight tapered design of thedipper 10 allows expansion without compaction and/or improves digging characteristics and efficiency. Thedipper 10 may also be used to remove/mine other materials, such as, for example, copper, iron ore, overburden material, etc.
Claims (24)
1. A dipper having an inlet and an outlet, the dipper comprising:
a front wall and an opposite back wall extending between the inlet and the outlet, a first reference plane extending from the inlet to the outlet and positioned between the front wall and the back wall, the front wall having a substantially linear inner surface, the front wall being arranged relative to the first reference plane at an angle of at least about 0 degrees and no more than about 3 degrees from the inlet toward the outlet
two side walls connected between the front wall and the back wall and extending between the inlet and the outlet, a second reference plane extending from the inlet to the outlet and positioned between the side walls; and
a lip coupled to at least the front wall and extending outwardly from the inlet;
wherein at least one of
the back wall tapers outwardly relative to the first reference plane from the inlet toward the outlet at an angle greater than about 0 degrees and no more than about 30 degrees, and
each of the side walls tapers outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than about 0 degrees and no more than about 30 degrees.
2. The dipper of claim 1 , wherein the front wall is arranged relative to the first reference plane at an angle of about 0 degrees.
3. The dipper of claim 1 , wherein the back wall tapers outwardly relative to the first reference plane from the inlet toward the outlet at an angle greater than about 1 degree and no more than about 10 degrees.
4. The dipper of claim 3 , wherein the back wall tapers outwardly relative to the first reference plane from the inlet toward the outlet at an angle of about 5 degrees.
5. The dipper of claim 1 , wherein each of the side walls tapers outwardly relative to the second reference plane from the inlet toward the outlet at an angle greater than about 1 degree and no more than about 10 degrees.
6. The dipper of claim 5 , wherein each of the side walls tapers outwardly relative to the second reference plane from the inlet toward the outlet at an angle of about 3 degrees.
7. The dipper of claim 1 , wherein the lip defines opposite side surfaces, each of the side surfaces tapering outwardly relative to the second reference plane from the inlet toward the outer surface at an angle greater than about 0 degrees and no more than about 30 degrees.
8. The dipper of claim 7 , wherein the lip defines opposite side surfaces, each of the side surfaces tapering outwardly relative to the second reference plane from the inlet toward the outer surface at an angle greater than about 1 degree and no more than about 10 degrees.
9. The dipper of claim 1 , wherein the lip defines opposite side surfaces, each of the side surfaces tapering outwardly relative to the second reference plane from the inlet toward the outer surface at an angle of about 0 degrees.
10. The dipper of claim 1 , wherein the front wall is curved in a plane tangential to the first reference plane.
11. A dipper having an inlet and an outlet, the dipper comprising:
a front wall and an opposite back wall extending between the inlet and the outlet;
two side walls connected between the front wall and the back wall and extending between the inlet and the outlet, a reference plane extending from the inlet to the outlet and positioned between the side walls, each of the side walls tapering outwardly relative to the reference plane from the inlet toward the outlet at an angle greater than about 0 degrees and no more than about 30 degrees; and
a lip coupled to at least the front wall and extending outwardly from the inlet to an outer surface, the lip having opposite side surfaces, each of the side surfaces tapering outwardly relative to the reference plane from the inlet toward the outer surface at an angle greater than about 0 degrees and no more than about 30 degrees.
12. The dipper of claim 11 , wherein each of the side walls tapers outwardly relative to the reference plane from the inlet toward the outlet at an angle greater than about 1 degree and no more than about 10 degrees.
13. The dipper of claim 12 , wherein each of the side walls tapers outwardly relative to the reference plane from the inlet toward the outlet at an angle of about 3 degrees.
14. The dipper of claim 11 , wherein each of the side surfaces taper outwardly relative to the reference plane from the inlet toward the outer surface at an angle greater than about 1 degree and no more than about 10 degrees.
15. The dipper of claim 14 , wherein each of the side surfaces taper outwardly relative to the reference plane from the inlet toward the outer surface at an angle of about 0 degrees.
16. The dipper of claim 11 , wherein another reference plane extends from the inlet to the outlet and is positioned between the front wall and the back wall, and wherein the front wall is arranged relative to the other reference plane at an angle of at least about 0 degrees and no more than about 3 degrees from the inlet toward the outlet.
17. The dipper of claim 16 , wherein the front wall is arranged relative to the other reference plane at an angle of at about 0 degrees.
18. The dipper of claim 11 , wherein the front wall is curved in a plane tangential to the other reference plane.
19. The dipper of claim 11 , wherein the back wall tapers outwardly relative to the other reference plane from the inlet toward the outlet at an angle greater than about 0 degrees and no more than about 30 degrees.
20. The dipper of claim 19 , wherein the back wall tapers outwardly relative to the other reference plane from the inlet toward the outlet at an angle greater than about 1 degree and no more than about 10 degrees.
21. The dipper of claim 20 , wherein the back wall tapers outwardly relative to the other reference plane from the inlet toward the outlet at an angle of about 5 degrees.
22. A dipper having an inlet and an outlet, an inlet reference plane being defined at the inlet, the dipper comprising:
a front wall and an opposite back wall extending between the inlet and the outlet, a front wall reference plane extending from the inlet to the outlet and positioned between the front wall and the back wall, the front wall having a substantially linear inner surface, the front wall being arranged relative to the front wall reference plane at an angle of at least about 0 degrees and no more than about 3 degrees from the inlet toward the outlet;
two side walls connected between the front wall and the back wall and extending between the inlet and the outlet; and
a lip coupled to at least the front wall and extending outwardly from the inlet;
wherein the inlet has an inlet area in the inlet reference plane, wherein the outlet has an outlet area in an outlet reference plane substantially parallel to the inlet reference plane, and wherein the front wall, the back wall, and the two side walls are arranged such that the outlet area is at least about 3 percent and no more than about 25 percent greater than the inlet area.
23. The dipper of claim 22 , wherein the outlet area is at least about 8 percent and no more than about 9 percent greater than the inlet area.
24. The dipper of claim 23 , wherein the outlet area is at least about 10 percent greater than the inlet area.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/452,380 US20120279095A1 (en) | 2011-05-02 | 2012-04-20 | Straight taper dipper |
CL2012001116A CL2012001116A1 (en) | 2011-05-02 | 2012-04-27 | A bucket that has an interior and an exterior, comprises a front wall and a rear wall, two side walls, where at least one of the rear wall narrows outward at an angle greater than 0 ° and no more than 30 °, and each of the side walls narrows outward with an angle greater than 0 ° and no more than 30 °. |
AU2012202435A AU2012202435B2 (en) | 2011-05-02 | 2012-04-27 | Straight taper dipper |
ZA2012/03103A ZA201203103B (en) | 2011-05-02 | 2012-04-30 | Straight taper dipper |
CN2012101354485A CN102767201A (en) | 2011-05-02 | 2012-05-02 | Straight taper dipper |
CN2012201959341U CN202865893U (en) | 2011-05-02 | 2012-05-02 | Straight cone bucket |
CN201511024836.6A CN105649131B (en) | 2011-05-02 | 2012-05-02 | Straight conical bucket |
CA2775868A CA2775868C (en) | 2011-05-02 | 2012-05-02 | Straight taper dipper |
US14/686,435 US10519621B2 (en) | 2011-05-02 | 2015-04-14 | Straight taper dipper |
US16/729,595 US10934682B2 (en) | 2011-05-02 | 2019-12-30 | Straight taper dipper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161481615P | 2011-05-02 | 2011-05-02 | |
US13/452,380 US20120279095A1 (en) | 2011-05-02 | 2012-04-20 | Straight taper dipper |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/686,435 Continuation US10519621B2 (en) | 2011-05-02 | 2015-04-14 | Straight taper dipper |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120279095A1 true US20120279095A1 (en) | 2012-11-08 |
Family
ID=47089246
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/452,380 Abandoned US20120279095A1 (en) | 2011-05-02 | 2012-04-20 | Straight taper dipper |
US14/686,435 Active 2032-08-09 US10519621B2 (en) | 2011-05-02 | 2015-04-14 | Straight taper dipper |
US16/729,595 Active US10934682B2 (en) | 2011-05-02 | 2019-12-30 | Straight taper dipper |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/686,435 Active 2032-08-09 US10519621B2 (en) | 2011-05-02 | 2015-04-14 | Straight taper dipper |
US16/729,595 Active US10934682B2 (en) | 2011-05-02 | 2019-12-30 | Straight taper dipper |
Country Status (6)
Country | Link |
---|---|
US (3) | US20120279095A1 (en) |
CN (3) | CN102767201A (en) |
AU (1) | AU2012202435B2 (en) |
CA (1) | CA2775868C (en) |
CL (1) | CL2012001116A1 (en) |
ZA (1) | ZA201203103B (en) |
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US9015969B2 (en) | 2012-01-31 | 2015-04-28 | Harnischfeger Technologies, Inc. | Shovel with pivoting bucket |
WO2015198248A1 (en) | 2014-06-26 | 2015-12-30 | Ansar Diseño Limitada | A bucket for a rope shovel |
US9995015B2 (en) | 2014-02-11 | 2018-06-12 | Caterpillar Global Mining Llc | Side wall for a movable part of an excavator bucket |
CN110700346A (en) * | 2019-10-11 | 2020-01-17 | 江阴***机械制造有限公司 | Bucket for mine |
US20220145577A1 (en) * | 2020-11-11 | 2022-05-12 | 9257-5810 Québec Inc. | Earth-working bucket with removable bowl |
WO2023278092A1 (en) * | 2021-06-28 | 2023-01-05 | Caterpillar Inc. | Dipper lip |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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AU2015202966B2 (en) * | 2014-06-02 | 2019-05-16 | Joy Global Surface Mining Inc | Dipper for a mining shovel |
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- 2012-04-27 CL CL2012001116A patent/CL2012001116A1/en unknown
- 2012-04-27 AU AU2012202435A patent/AU2012202435B2/en active Active
- 2012-04-30 ZA ZA2012/03103A patent/ZA201203103B/en unknown
- 2012-05-02 CN CN2012101354485A patent/CN102767201A/en active Pending
- 2012-05-02 CN CN201511024836.6A patent/CN105649131B/en active Active
- 2012-05-02 CN CN2012201959341U patent/CN202865893U/en not_active Expired - Lifetime
- 2012-05-02 CA CA2775868A patent/CA2775868C/en active Active
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9015969B2 (en) | 2012-01-31 | 2015-04-28 | Harnischfeger Technologies, Inc. | Shovel with pivoting bucket |
US9611617B2 (en) | 2012-01-31 | 2017-04-04 | Harnischfeger Technologies, Inc. | Shovel with pivoting bucket |
US10094090B2 (en) | 2012-01-31 | 2018-10-09 | Joy Global Surface Mining Inc | Shovel with pivoting bucket |
US9995015B2 (en) | 2014-02-11 | 2018-06-12 | Caterpillar Global Mining Llc | Side wall for a movable part of an excavator bucket |
WO2015198248A1 (en) | 2014-06-26 | 2015-12-30 | Ansar Diseño Limitada | A bucket for a rope shovel |
US10329734B2 (en) | 2014-06-26 | 2019-06-25 | Ansar Diseno Limitada | Bucket for a rope shovel |
CN110700346A (en) * | 2019-10-11 | 2020-01-17 | 江阴***机械制造有限公司 | Bucket for mine |
US20220145577A1 (en) * | 2020-11-11 | 2022-05-12 | 9257-5810 Québec Inc. | Earth-working bucket with removable bowl |
WO2023278092A1 (en) * | 2021-06-28 | 2023-01-05 | Caterpillar Inc. | Dipper lip |
US11926987B2 (en) | 2021-06-28 | 2024-03-12 | Caterpillar Inc. | Dipper lip |
Also Published As
Publication number | Publication date |
---|---|
CN105649131A (en) | 2016-06-08 |
CN102767201A (en) | 2012-11-07 |
AU2012202435A1 (en) | 2012-11-22 |
US20200157766A1 (en) | 2020-05-21 |
CL2012001116A1 (en) | 2014-11-14 |
CN105649131B (en) | 2020-07-07 |
US10519621B2 (en) | 2019-12-31 |
US20150218774A1 (en) | 2015-08-06 |
CA2775868C (en) | 2020-08-18 |
CA2775868A1 (en) | 2012-11-02 |
US10934682B2 (en) | 2021-03-02 |
ZA201203103B (en) | 2012-12-27 |
AU2012202435B2 (en) | 2015-03-05 |
CN202865893U (en) | 2013-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HARNISCHFEGER TECHNOLOGIES, INC., DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FELD, DAN;NICOSON, RICHARD;POWERS, WILLIAM R.;REEL/FRAME:028084/0069 Effective date: 20120420 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |