US3791705A - Mounting structure for a rock cutter wheel - Google Patents

Mounting structure for a rock cutter wheel Download PDF

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Publication number
US3791705A
US3791705A US00240034A US3791705DA US3791705A US 3791705 A US3791705 A US 3791705A US 00240034 A US00240034 A US 00240034A US 3791705D A US3791705D A US 3791705DA US 3791705 A US3791705 A US 3791705A
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United States
Prior art keywords
mounting
standard
support shaft
mounting pin
end standard
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Expired - Lifetime
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US00240034A
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English (en)
Inventor
G Schimel
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Robbins Co
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Robbins Co
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Publication date
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/10—Roller bits with roller axle supported at both ends
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/104—Cutting tool fixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2352/00—Apparatus for drilling

Definitions

  • the principal object of this-invention is to provide novel mounting structure for a rock cutter wheel adapted to minimize the work effort in assembly and disassembly of the cutter wheels subassembly from its mounting saddle or block.
  • a mounting pin and a complementary mounting pin socket is provided at each end of the cutter assembly.
  • the mounting pins may be end portions of a support shaft for the cutter wheel, with the sockets therefor being formed in the end standards.
  • the sockets may be formed in the end'portions' of the support shaft and the mounting pins be carried by the end standards.
  • one of the end standards is relatively fixed and the other is readily removable.
  • Disassembly of a cutter assembly involves detachment and removalof the readily removable end standard from its support, followed by an endwise removal of the cutter wheel subassembly away from the second end standard.
  • the second end standard includes a threaded socket coaxially related to the cutter wheel and support shaft axis.
  • An elongated bolt extends axially through the support shaft (and perhaps also through an opening therefor in such standard) and threads into the threaded socket. Tapered mounting pins and mounting pin sockets may be employed, and the elongated connector bolt may be used for drawing the two end standards relatively together and the mounting pins into tight engagement with the mounting pin sockets.
  • FIG. 1 is a view of a first embodiment of the cutter assembly showing the mounting base, the end standards and the upper half of the cutter wheel subassembly in axial section, and the lower half of the cutter wheel subassembly in side elevation;
  • FIG. 2 is an exploded isometric view of the cutter assembly of FIG. 1, with some parts cut away for clarity of illustration;
  • FIG. 3 is an assembled view of the cutter assembly shown by FIGS. 1 and 2;
  • FIG. 4 is view like FIG. 1, but of a modified form of cutter assembly
  • FIG. 5 is a view like FIG. 2, but of the modified cutter assembly shown by FIG. 4;
  • FIG. 6 is a view like FIG. 3, but of the modified cutter assembly shown by FIGS. 4 and 5;
  • FIG. 7 is a view like FIGS. 1 and 4, but of a second modified form of cutter assembly
  • FIG. 8 is a view like FIGS. 2 and 5, but of the second modified form of cutter. assembly.
  • FIG. 9 is an assembled view like FIGS. 3 and 6, but of the second modified form of cutter assembly.
  • the cutter assembly shown by FIGS. 1-3 comprises a mounting base 10, a first end standard 12 connected to one end of the base 10, and a second end standard 14 which is detachably connected to the opposite end of the base 10.
  • the base '10 is welded or otherwise secured to a cutter carrier (e.g. a tunneling machine cutterhead) 16.
  • the two end standards 12, 14 are generally perpendicular to the face of the cutter carrier 16.
  • the mounting structure further includes an elongated support shaft 18 which when mounted is perpendicular to the axis'of rotation of the carrier 16, depicted by the axis nonlimitive embodiments of the invention.
  • the demountable portion of the cutter assembly (-i.e. the cutter wheel subassembly) comprises the support shaft 18, a cutter wheel 20, a. pair of combination bearings 22 mounting the cutter wheel 20 for a rotation about the support shaft 18, and a pair of seals 24.
  • the support shaft 18 is provided with an enlarged diameter portion 26 at one end thereof, a smaller diameter intermediate portion 28 on which the bearings 22 are supported, and a threaded portion 30 adapted to receive a retainer nut 32.
  • the right end bearing 22 (as pictured in FIG. 1) and an intermediate spacer ring 34 are slipped onto the support shaft 18 from thesmall diameter end thereof.
  • the cutter wheel 20 is installed, also from the small diameter end of the shaft 18, and is moved endwise until its internal spacer flange 36 is against the installed bearing 22. Next, the second bearing 22 is inserted into place and then the retainer nut 32 is installed.
  • cutter wheel 20 comprises an annular rim portion 38, a cutting tire or ring 40 and a retainer ring 42.
  • portion of the support shaft 18 constitutes an outwardly tapering mounting pin 46 of complementary taper and size.
  • An internally threaded smaller diameter socket 48 is provided at the base of the mounting pin socket 44. Socket 48 is coaxially related to the mounting pin socket 44, the support shaft 18 and an elongated bolt 50 which extends through an elongated central passageway that is formed in the support shaft 18.
  • the end standard 14, herein sometimes referred to as the second end standard, is provided with a cylindri cal mounting pin socket 52 which receives a cylindrical mounting pin portion 54 of the support shaft 18.
  • the mounting pin 46 is sometimes referred to as the first end portion of the support shaft or the first mounting pin.
  • the mounting pin 54 is sometimes referred to as the second end portion of the support shaft or the second mounting pin.
  • the mounting socket 44 is sometimes referred to as the first mounting socket and the socket 52 is sometimes referred to as the second mounting pin socket.
  • the second end standard 14 is shown to be detachably mounted on its end of the mounting base 10. It may include a downwardly depending tenon 56 sized to be snugly received within a mortise 58 formed in the base 10. Such standard 14 may be secured to the base 10 by means of machine bolts 60 which extend through aligned openings in side parts 62, 64 and in the base 10 and is secured in place by nut 66 (FIG. 1).
  • end standard 14 is split or divided along a plane y which axially bisects the mounting pin socket 52.
  • the cutter wheel subassembly (support shaft 18, cutter wheel 20, bearings 22, seals 24, etc.) is moved endwise until the mounting pin 46 thereon is engaged within socket 44. This movement does not have to be along a straight path but may be along an arcuate path.
  • the end standard 14 is moved relative to the cutter wheel subassembly until the support shaft end portion 54 is received within the mounting socket 52.
  • the recess 58 is open at its end so that the tenon 56 can slide into it during the above described movement of standard l4.
  • the elongated bolt 50 is inserted first through an opening in a cover cap 68 and then through the elongated central passageway in the support shaft 18.
  • the bolt 50 is tightened to draw the cutter wheel subassembly tightly against end standard 12 and the mounting pin 46 snugly within the socket 44.
  • the bolts 60 are installed and the nuts 66 are attached.
  • the cover cap 68 is provided merely for the purpose of protecting the bolt head 70. As shown by FIGS. l-3, the bolt head 70 is housed within a countersink 72 formed in the cap 68.
  • FIGS. 4-6 The embodiment of FIGS. 4-6 will now be described.
  • the cutter wheel 20 and most of the elements serving to mount it for rotation about the support shaft 18 are identical to those described in connection with the embodiments of FIGS. 1-3. Therefore, the elements will not again be described and only reference numeral 20 will be used in FIGS. 4-6 in connection with the cutter wheel.
  • inwardly tapering mounting pin sockets 96, 82 are provided in each of the end standards 12, 14' and a complementary outwardly tapering mounting pin 74, 76 is provided at each end of the support shaft 18.
  • the mounting pin 76 and the retainer nut for the bearings, etc. are integrated into a single member. Such member 76 is threaded onto the small diameter end of the support shaft 18.
  • the initial portion of the assembly procedure for this embodiment is identical to the initial portion of the assembly procedure for the embodiment shown by FIGS. 1-3.
  • a downwardly opening trapezoidal mortise 78 is formed in the end standard 14'.
  • Mortise 78 is adapted to receive a complementary tenon 80 which projects endwi'se outwardly from the base 10'.
  • the mortise 78 is aligned with the tenon 80 and the end standard 14 is moved towards the partially mounted cutter wheel subassembly until the tenon 80 is loosely engaged by the mortise 78 and the mounting pin 76 is loosely within the mounting socket 82.
  • the connector bolt 50 is inserted through first an opening 84 in end standard 14' and then through the central passageway 86 in the support shaft 18'.
  • the bolt 50 is rotated to thread its threaded end portion 48 into the threaded socket 90.
  • the head 92 bears against the base of the countersink 94so that when the bolt 50 is tightened further it forces the end standard 14 closer to end standard 12', and the mounting pins 74, 76 into snug engagement'within their respective sockets 96, 82; Finally, a cross bolt 98 is tightened to draw the two lower side parts 100, 102 of the end standard 14 toge'ther and into gripping engagement with the tenon 80.
  • the end standard 14 is provided with a gap 104 in the region thereof above the tenon 80 and the bolt 98 extends through a passageway provided for it also above the tenon 80 along an intersecting path with the gap 104. The part of such bolt passageway within end standard part is internally threaded to receive the threads of the bolt 98.
  • a countersink 106 is provided for the head 108 of bolt 98.
  • FIGS. 7-9 The mounting structure shown by FIGS. 7-9 is quite similar to the mounting structure which has just been described in connection with FIGS. 4-6. Therefore, only the difi'erences will be discussed in detail. Also, in this form the cutter wheel 20, the bearings 22, the seals 24, etc. willnot be described again, and only reference numeral 20 will be used in the drawing figures.
  • the support shaft 18" is tubular in form and includes an inwardly tapering mounting pin socket 110, 112 at each of its ends.
  • Socket 110 is adapted to mate with a complementary inwardly tapering mounting pin 114 which is a part of end standard 112".
  • a second inwardly tapering mounting pin 116 is carried by the second end standard 14".
  • a transverse passageway 118 is provided through the tenon 80'.
  • This passageway 118 is alignable with a bolt receiving passageway 120 formed through the lower side portions 122, 124 of the end standard 14" when the tenon 80 is within the mortise 78'.
  • Passageway 118 is wider than the diameter of the cross bolt 98, so that the end standard 14 can be adjusted in position axially of the support shaft 18" while the cross bolt 98 is engaged within both passageway 118 and passageway 120.
  • Assembly commences by the workmen moving the cutter wheel subassembly relatively toward the end standard 12, to place the mounting pin 114 within its mounting socket 110.
  • the end standard 14 is moved into place, with the tenon 80 entering into mortise 78' and the mounting pin 116 entering into mounting pin socket 112.
  • the main connector bolt 50 is inserted first through its opening in standard 14", then through the open center of the support shaft 18, and is threaded into the internally threaded socket 126 formed in end standard 12', coaxially with the mounting pin 114.
  • the bolt 50 is tightened for the purpose of drawing the mounting pins 114, 116 into tight engagement with the mountingpin sockets 110, 1 12.
  • the cross bolt 98 is tightened for the purpose of squeezing the two clamp parts 122, 124 together and into tight engagement with the tenon 80.
  • FIGS. 7-9 The embodiment of FIGS. 7-9 is characterized by having only two bolt heads and both of them are countersunk into the end standard 14", so that they are protected against wear.
  • Mounting structure for a rock cutter wheel comprising:
  • an elongated support shaft having first and secon end portions and a central passageway extending axially therethrough;
  • first mounting pin on one of said first end portion and said first end standard and a complementary first mounting pin socket in the other, said mounting pin and said mounting pin socket being oriented to be engageable by a movement of said support shaft endwise towards said first end standard;
  • a second end standard including means for detachably connecting it to its support in spaced relation from the first end standard;
  • an elongated bolt insertable through the central passageway in said support shaft, said bolt having a threaded end portion which is threadable into said threaded socket, so that said bolt can be used to secure the support shaft to at least said first end standard.
  • first and second end portions of the support shaft include the said first and second mounting pin sockets and the said first and second mounting pins are on the first and second end standards.
  • first and second end portions of the support shaft include the said first and second mounting pins and the mounting pin sockets are formed in the first and second end standards.
  • Mounting structure for a rock cutter wheel comprising:
  • a first end standard secured to said mounting base and including a complementary first mounting pin socket for receiving the first mounting pin, by a movement of said support shaft endwise towards said first end standard;
  • a second end standard including means for detachably connecting it to said base in spaced relation from the first end standard and a complementary second mounting pin socket for receiving said second mounting pin, by a movement of said second end standard axially of said support shaft.
  • mounting structure wherein said mounting base includes a tenon projecting outwardly at the second standard end thereof and said second standard includes a mortise for receiving said tenon.
  • said second end portion includes inwardly compressible side portions defining said mortise and means for compressing said side portions into tight engagement with the tenon.
  • said first end standard includes a threaded socket extending coaxially with the second mounting pin socket
  • said elongated support shaft includes a central passageway extending axially therethrough
  • said mounting structure includes an elongated bolt insertable through the central passageway in said support shaft, said bolt having a threaded end portion which is threadable into said threaded socket, so that said bolt can be used to secure the support shaft to at least said first end standard.
  • Mounting structure for a rock cutter wheel comprising:
  • a first end standard secured to said base and including a complementary first mounting pin for insertion into the first mounting pin socket, by a movement of said support shaft endwise toward said first end standard;
  • a second end standard including means for detachably connecting it to said base in spaced relation from the first end standard and a complementary second mounting pin for insertion into said second mounting pin socket, by a movement of said second end standard axially of said support shaft.
  • mounting structure according to claim 10, wherein said mounting base includes a tenon projecting outwardly at the second standard end thereof and said second standard includes a mortise for receiving said tenon.
  • said second end portion includes inwardly compressible side portions defining said mortise and means for compressing said side portions into tight engagement with the tenon.
  • said first end standard includes a threaded socket extending coaxially with the second mounting pin
  • said elongated support shaft includes a central passageway extending axially therethrough
  • said mounting structure includes an elongated bolt insertable through the central passageway in said support shaft, said bolt having a threaded end portion which is threadable into said threaded socket, so that said bolt can be used to secure the support shaft to at least said first end standard.
  • an elongated support shaft having first and second end portions; a mounting base; a first end standard secured to said mounting base; a first mounting pin on one of said first end portion and said first end standard and a complementary first mounting pin socket in the other, said mounting pin and said mounting pin socket being oriented to be engageable by a movement of said support shaft endwise towards said first end standard;
  • a second end standard including means for detachably connecting it to said mounting base in spaced relation from the first end standard, said means comprising compressible side parts defining a mortise for receiving said tenon and means for compressing said side parts for the purpose of clamping them in tight engagement with said tenon;
  • said elongated support shaft also includes a central passageway extending axially therethrough, a threaded socket is formed in said first end standard and is alignable with the central passageway in support shaft, and said mounting structure includes an elongated bolt insertable through the central passageway in said support shaft, said bolt having a threaded end portion which is threadable into said threaded socket, so that said bolt can be used to secure the support shaft to at least said first end standard.
  • said second end standard includes a bolt receiving opening extending therethrough which is in alignment with the central passageway of the elongated support shaft when said mounting pins are within the mounting pin sockets, and said elongated bolt includes a head portion of larger dimension than the bolt opening, so that when such bolt is tightened its head portion will bear against the second end standard and move it towards the first end standard.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US00240034A 1972-03-31 1972-03-31 Mounting structure for a rock cutter wheel Expired - Lifetime US3791705A (en)

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Application Number Priority Date Filing Date Title
US24003472A 1972-03-31 1972-03-31

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US3791705A true US3791705A (en) 1974-02-12

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US00240034A Expired - Lifetime US3791705A (en) 1972-03-31 1972-03-31 Mounting structure for a rock cutter wheel

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US (1) US3791705A (xx)
JP (1) JPS5532879B2 (xx)
AU (1) AU462310B2 (xx)
CA (1) CA963920A (xx)
CH (1) CH569563A5 (xx)
DE (1) DE2316032C2 (xx)
FR (1) FR2178962B1 (xx)
IT (1) IT979947B (xx)
SE (1) SE403812B (xx)
ZA (1) ZA73390B (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851718A (en) * 1972-11-09 1974-12-03 Jarva Inc Roller cutter
US3884312A (en) * 1973-09-12 1975-05-20 Robbins Co Rock cutter assemblies
US4036313A (en) * 1975-07-03 1977-07-19 Smith International, Inc. Mounting for inboard cutters on a raise drill
US4760890A (en) * 1987-05-18 1988-08-02 Tamrock Inc. Cutter assembly for rotary boring of earth
US4784438A (en) * 1986-02-20 1988-11-15 Fikse Tyman H Tunneling machine rotatable member
US5181577A (en) * 1989-09-25 1993-01-26 Kabushiki Kaisha Komatsu Seisakusho Device for fixing disk cutter to tunnel excavator
US5421422A (en) * 1993-11-19 1995-06-06 Boretec Inc Roller cutter mount for tunneling machine
US5577565A (en) * 1995-06-29 1996-11-26 Boretec, Inc. Compact roller cutter
WO1998013573A1 (en) * 1996-09-26 1998-04-02 Atlas Copco Robbins Inc. Tilted axis rotary rock cutters with readily replaceable cutter rings
WO2008118308A1 (en) * 2007-03-28 2008-10-02 Clark Equipment Company Lift arm assembly for a power machine or vehicle
US20090079256A1 (en) * 2007-09-25 2009-03-26 Caterpillar Inc. Rotary cutter for tunnel boring machine
US20140232167A1 (en) * 2011-10-05 2014-08-21 Herrenknecht Ag Device for monitoring the state of rotation of a disk cutter arrangement of a shield tunnel boring machine and disk cutter arrangement for a shield tunnel boring machine
DE102021102833A1 (de) 2021-02-08 2022-08-11 Aktiebolaget Skf Schneidringanordnung

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0437991Y2 (xx) * 1985-02-19 1992-09-07
JPS61141395U (xx) * 1985-02-19 1986-09-01
JPS6216927U (xx) * 1985-07-12 1987-01-31
JPH0762133B2 (ja) * 1986-10-15 1995-07-05 関西熱化学株式会社 コ−クス工場化工地区の副生物回収装置における臭気配管の詰り防止方法
JPS6394936U (xx) * 1986-12-05 1988-06-18
JPS6465524A (en) * 1987-09-05 1989-03-10 Stanley Electric Co Ltd Manufacture of liquid crystal display element
HUT51731A (en) * 1988-11-10 1990-05-28 Veszpremi Szenbanyak Vallalat Cutting disc for breaking coal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US610232A (en) * 1898-09-06 Hermann ganswindt
US2061933A (en) * 1935-03-18 1936-11-24 Edwin A Perkins Structure for roller bits
US3216513A (en) * 1964-01-06 1965-11-09 Robbins & Assoc James S Cutter assemblies for rock drilling
US3679009A (en) * 1971-02-02 1972-07-25 Kennametal Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines
US3707315A (en) * 1971-02-02 1972-12-26 Subterranean Tools Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1852843A (en) * 1925-07-07 1932-04-05 Oil Well Supply Co Earth drilling bit
DE1953550C2 (de) * 1969-10-24 1974-03-21 J.C. Soeding & Halbach, 5800 Hagen Mit Rollenmeißeln bestückter Arbeitskopfeiner Einrichtung zum Abtragen von Gestein, insbesondere einer Vortriebseinrichtung zum Auffahren von Strecken, Schächten od. dgl
US3822605A (en) * 1972-02-17 1974-07-09 Skf Ind Trading & Dev Journal means for mounting rotary drums

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US610232A (en) * 1898-09-06 Hermann ganswindt
US2061933A (en) * 1935-03-18 1936-11-24 Edwin A Perkins Structure for roller bits
US3216513A (en) * 1964-01-06 1965-11-09 Robbins & Assoc James S Cutter assemblies for rock drilling
US3679009A (en) * 1971-02-02 1972-07-25 Kennametal Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines
US3707315A (en) * 1971-02-02 1972-12-26 Subterranean Tools Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851718A (en) * 1972-11-09 1974-12-03 Jarva Inc Roller cutter
US3884312A (en) * 1973-09-12 1975-05-20 Robbins Co Rock cutter assemblies
US4036313A (en) * 1975-07-03 1977-07-19 Smith International, Inc. Mounting for inboard cutters on a raise drill
US4784438A (en) * 1986-02-20 1988-11-15 Fikse Tyman H Tunneling machine rotatable member
US4760890A (en) * 1987-05-18 1988-08-02 Tamrock Inc. Cutter assembly for rotary boring of earth
US5181577A (en) * 1989-09-25 1993-01-26 Kabushiki Kaisha Komatsu Seisakusho Device for fixing disk cutter to tunnel excavator
US5421422A (en) * 1993-11-19 1995-06-06 Boretec Inc Roller cutter mount for tunneling machine
US5577565A (en) * 1995-06-29 1996-11-26 Boretec, Inc. Compact roller cutter
WO1998013573A1 (en) * 1996-09-26 1998-04-02 Atlas Copco Robbins Inc. Tilted axis rotary rock cutters with readily replaceable cutter rings
WO2008118308A1 (en) * 2007-03-28 2008-10-02 Clark Equipment Company Lift arm assembly for a power machine or vehicle
US20080236953A1 (en) * 2007-03-28 2008-10-02 Clark Equipment Company Lift Arm Assembly for a Power Machine or Vehicle
CN101668900B (zh) * 2007-03-28 2012-12-19 克拉克设备公司 用于动力机械或车辆的提升臂组件
US8453785B2 (en) 2007-03-28 2013-06-04 Clark Equipment Company Lift arm assembly for a power machine or vehicle
US20090079256A1 (en) * 2007-09-25 2009-03-26 Caterpillar Inc. Rotary cutter for tunnel boring machine
US7997659B2 (en) 2007-09-25 2011-08-16 Caterpillar Inc. Rotary cutter for tunnel boring machine
US20140232167A1 (en) * 2011-10-05 2014-08-21 Herrenknecht Ag Device for monitoring the state of rotation of a disk cutter arrangement of a shield tunnel boring machine and disk cutter arrangement for a shield tunnel boring machine
US9181800B2 (en) * 2011-10-05 2015-11-10 Herrenknecht Ag Device for monitoring the state of rotation of a disk cutter arrangement of a shield tunnel boring machine and disk cutter arrangement for a shield tunnel boring machine
DE102021102833A1 (de) 2021-02-08 2022-08-11 Aktiebolaget Skf Schneidringanordnung

Also Published As

Publication number Publication date
CA963920A (en) 1975-03-04
AU5132073A (en) 1974-07-25
JPS5532879B2 (xx) 1980-08-27
FR2178962A1 (xx) 1973-11-16
IT979947B (it) 1974-09-30
ZA73390B (en) 1973-10-31
JPS4915601A (xx) 1974-02-12
DE2316032C2 (de) 1983-12-15
FR2178962B1 (xx) 1977-02-04
DE2316032A1 (de) 1973-10-18
CH569563A5 (xx) 1975-11-28
AU462310B2 (en) 1975-06-19
SE403812B (sv) 1978-09-04

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