EP0034143B1 - Rotierender schneidekopf für eine erdbohrmaschine - Google Patents

Rotierender schneidekopf für eine erdbohrmaschine Download PDF

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Publication number
EP0034143B1
EP0034143B1 EP80900050A EP80900050A EP0034143B1 EP 0034143 B1 EP0034143 B1 EP 0034143B1 EP 80900050 A EP80900050 A EP 80900050A EP 80900050 A EP80900050 A EP 80900050A EP 0034143 B1 EP0034143 B1 EP 0034143B1
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EP
European Patent Office
Prior art keywords
cutterhead
radial spoke
beams
main frame
cutter
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.)
Expired
Application number
EP80900050A
Other languages
English (en)
French (fr)
Other versions
EP0034143A1 (de
EP0034143A4 (de
Inventor
Barry Albert Spencer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robbins Co
Original Assignee
Robbins Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robbins Co filed Critical Robbins Co
Publication of EP0034143A1 publication Critical patent/EP0034143A1/de
Publication of EP0034143A4 publication Critical patent/EP0034143A4/de
Application granted granted Critical
Publication of EP0034143B1 publication Critical patent/EP0034143B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads
    • 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
    • E21D9/0879—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering
    • 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
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms

Definitions

  • the present invention relates to rock boring machines, and in particular to a new cutterhead construction for such a machine.
  • U.S. Patent No. 3,756,332 discloses a popular open face cutterhead and a typical cutter arrangement on a cutterhead.
  • the cutterhead includes a plurality of disc cutter assemblies positioned for cutting concentric kerfs in the rock.
  • the disc cutters include sloping breaker surfaces flanking circumferential cutting edges. These breaker surfaces serve to fracture and dislodge the rock material between kerfs which are cut by the cutting edges.
  • the cutter assemblies are mounted onto the front side of the cutterhead. Most of them are mounted on the front walls of radial spoke beams, while others are mounted on the front side of auxiliary frame structure that is angularly offset from the radial spoke beams.
  • a disadvantage of this type of arrangement is that whenever it is necessary to replace the cutters, which is a frequent occurrence, it is necessary to back the cutterhead up from the tunnel face and then send a workman into the quite dangerous region forwardly of the cutterhead.
  • open face tunnelling machine is used herein to mean a cutterhead comprising a plurality of radial spoke beams on which most of the cutters are mounted, with spaces being provided between adjacent beams through which the mined material passes.
  • open face cutterhead the mined material is picked up only at the periphery of the cutterhead, except for pieces which are small enough to pass through the small spaces which exist about each roller cutter element.
  • the open face or spoke style of cutterhead possesses advantages over the closed face style of cutterhead in that the cut material can pass through the cutterhead at almost any level of the tunnel face and need not fall down to be picked up by peripheral buckets.
  • the object of the present invention is to provide an improved open face type cutterhead on which all of the roller cutters, including a center cutter assembly and gauge cutters, are removable from the back side of the cutterhead.
  • the present invention provides a main frame for a rotary cutterhead of an earth boring machine, said main frame comprising an annular beam by which the cutterhead is mounted onto the earth boring machine for rotation about an axis of rotation; a central hub structure disposed forwardly of the annular beam; and a plurality of radial spoke beams having inner ends integrally connected to the hub structure, intermediate portions extending rearwardly and radially outwardly from the hub structure to the annular beam and outer ends which are integrally connected with the annular beam to thereby form the main frame in a generally dome shape, each of said radial spoke beams having side portions defining an elongate opening extending through and substantially along the entire length of said beam.
  • roller type cutters are mounted between the side plate members by cutter mounts which extend transversely of the radial spoke beams and are integrally connected at their ends to the spaced apart side plate members, to also function as structural brace members for the radial spoke beam.
  • the cutter mounts are adapted for installation and removal of the roller cutters from the rear side of the cutterhead and the main frame provides space inside the cutterhead large enough to provide room for installation and removal of the roller cutters from behind the cutterhead.
  • the side plate members extend generally vertically at the front of the cutterhead and at their outer ends curve rearwardly before connecting to the annular beam.
  • the gauge cutters are mounted between the rearwardly extending outer end portions of the side plate members of at least some of the raidal spoke beams.
  • Installation and removal paths for the gauge cutters extend generally vertically in a region of the interior space that is located forwardly of the annular beam and rearwardly of the front portions of the radial spoke beams.
  • a center cutter assembly is preferably mounted within the interior of the hub structure.
  • a conveyor for removing mined material rearwardly from the region of the cutterhead and its collector structure may be mounted for movement between a forward position in which the collector structure is in a collecting position adjacent the rear side of the cutterhead and a retracted position in which enough clearance is provided forwardly of it to allow installation and removal of the center cutter assembly.
  • the main frame of the cutterhead is relatively simple and the side plate members which define the radial spoke beams, and the cutter mount structure therein, perform the second function of mounting the roller cutters for easy removal from the rear side of the cutterhead.
  • the rearwardly curved nature of the outer end portions of the side plate members provides the necessary room within the cutterhead to permit installation and removal of the gauge cutters from behind the cutterhead and also strengthens the peripheral region of the cutterhead.
  • the edgewise orientation of the side plate members relative to the thrust forces imposed on the radial spoke beams contributes to the beams being relatively strong while relatively simple in construction
  • the annular beam to which the radial spoke beam side plate members are connected is preferably a box beam which provides a quite strong and rigid collector for the forces which are imposed on the radial spoke beams and evenly distribute such forces to the combination thrust and radial bearing which serves to mount the cutterhead for rotation.
  • the tunnelling machine itself is of the rotary cutterhead hard material disintegrating type.
  • the advance direction is coincident to the rotary axis of the cutterhead and the tunnelling machine follows the cutterhead into the opening formed thereby.
  • the basic parts of the tunnelling machine are a main frame which includes a cutterhead support 10 attached to a tubular shield 12 and a rearwardly projecting beam 14.
  • a gripper assembly 16 is supported for relative sliding movement along a straight portion of the beam 14.
  • Thrust rams 18, located on both sides of the machine, are interconnected between the cutterhead support 10 and the gripper assembly 16.
  • the gripper assembly 16 is positioned forwardly on the beam 14. Its gripper shoes 17 are hydraulically moved outwardly into gripping contact with the side walls of the tunnel. Then, the thrust rams 18 are extended while the rotary cutterhead is being rotated by means of a plurality of drive motors 22. Motors 22 drive circular gears (not shown) which mesh with a larger diameter gear 24 that is an integral part of the rotating cutterhead 20. When the cylinders 18 reach the forward limits of travel the gripper pads 17 are retracted and the cylinders 18 are retracted for the purpose of drawing the gripper assembly forward into a new position. Then, the gripper pads 17 are again moved outwardly into contact with the tunnel wall and the boring procedure is repeated.
  • Roller cutters 26, 28, 30 (FIG. 2) are used and the arrangement or pattern of these cutters may be basically like what is shown by U.S. Patent No. 3,756,332.
  • the disc cutters are arranged to cut concentric kerfs (e.g. spaced 2; inches- 4 inches apart) and to fracture the rock between kerfs.
  • the roller cutters 26, 28, 30 may be installed onto and are removable from the cutterhead 20 from the rear side of the cutterhead 20. This makes it unnecessary for the tunnelling machine to be backed up and for a workman to go down into the very hazardous region between the front of the cutterhead and the tunnel face for the purpose of changing cutters.
  • the frame of the cutterhead comprises a box-like hub structure 32 which may be a one-piece casting.
  • Hub structure 32 preferably is of a generally hexahedral form and comprises six peripheral walls 34, 36, 38, 40, 42, 44 and a front wall 46 (FIGS. 2 and 5). In larger cutterheads the number of radial spokes may be increased to eight. In smaller cutterheads the number may be reduced to four, for example.
  • An opening 47 is provided in the front wall 46 and the rear side of the hub structure 32 is open.
  • a plurality of radial spoke beams 48 are integrally welded to the hub structure 32 generally at the corner regions where the walls 34, 36, 38, 40, 42, 44 meet each other. As shown best by FIG.
  • Each radial spoke beam 48 comprises a pair of spaced apart steel plate side walls 50, 52.
  • the inner ends of side walls 50, 52 abut against end or side portions of the stub walls and are welded thereto.
  • Each side wall 50, 52 occupies a plane which is substantially parallel to the tunnel axis.
  • the beams 48 are open both front and rear so that a front to rear open space exists between their side walls 50, 52. Spaces also exist between adjacent beams 48.
  • this shape is preferably a relatively flat crown shape with a generally circular curvature existing at the outer regions.
  • the side plate members 50 extend generally radially outwardly from the center hub structure 32 and in their outer regions curve rearwardly about ninety degrees.
  • the upper rear ends of the side plate members 50, 52 are integrally attached to a frusto-conical shape forward wall 58 of an annular box beam 60.
  • Box beam 60 also includes a frusto-conical peripheral wall 62, a frusto-conical rear wall 64, a mounting ring 66, which is also an inner rear wall, and a cylindrical inner wall 68.
  • this construction of the annular box beam could be different.
  • the illustrated configuration of the side walls 50, 52 results in radial beams 48 which are quite strong in the direction of the thrust loads applied to them, since the side walls extend edgewise to the direction of thrust loading.
  • the configuration of the side walls 50, 52 and their location of connection with the annular cox beam 60 results in a space existing between each pair of side walls 50, 52, throughout the full extent of beams 48, i.e. from where they are connected to the center hub member 32 out to where they are connected to the annular box beam 60, in which the roller cutters are mounted.
  • Such configuration of side walls 50, 52 and location of attachment of the side walls 50, 52 to the beam 60 also provides a sufficient amount of interior space IS (FIG. 1) within the cutterhead 20 to allow installation and removal of all of the cutters from behind the cutterhead. Installation and removal paths for the gauge cutters 30 are defined in a generally vertical direction, forwardly of the box beam forward wall 58.
  • the cutterhead support includes a central axial passageway 70 which houses the front portion 72 of the conveyor assembly and a hopper or collector 74 associated therewith.
  • the cutterhead support also supports a large diameter bearing 76 of a type which is commonly used in tunnelling machines having open centered cutterheads.
  • the box beam 60 is secured to a second smaller diameter box beam 78 which is directly supported for rotation by the bearing 76.
  • the mounting ring 66 is secured to a front radial wall 80 of box beam 78.
  • the usual dirt seals 82, 84 are provided between the rotating and non-rotating parts at each end of the bearing 76.
  • the center cutter assembly 28 is mounted inside the center hub structure 32.
  • the center cutter assembly 28 comprises four disc cutters 86.
  • Mounting frames are used which permit mounting of the center cutter assembly 28 from the rear side of the cutterhead.
  • Center cutter assembly 28 may include two parts, each including a pair of disc cutters 86 mounted on a single shaft 87.
  • support portions 88 enter spaces between retainer portions 90 of the hub structure 32. These retainer portions 90 border the sides of the window 47.
  • the center cutter mounting frames also includes mounting flanges 92, formed to include openings 94 (FIG. 9) for receiving bolts 96 which thread into threaded openings 98 which are formed in retainer portions 90.
  • each end member 100, 102 is constructed to include an avenue 108, 110 sized to receive an end portion 104, 106 of the stator part of the cutter assembly 26, and also load transfer blocks 112, 114.
  • the roller cutter assembly 26 is moved into and is removed out from the cutter well from behind the cutterhead 20.
  • FIG. 13 shows a roller cutter assembly 26 spaced rearwardly from the rear portal of its cutter well.
  • Such load carrying surfaces constitute surfaces on the cutterhead frame since the end members 100, 102 are integral portions of the cutterhead frame.
  • thrust loads imposed on the cutting portion of the roller cutter are transmitted in compression through the load transfer blocks 112, 114 into the cutterhead frame.
  • the cutterhead may be completed by adding auxiliary frame members 126 (plates on edge) in a spaced relationship to the frame members 50, 52 to define spaces alongside of the inner spaces of the spokes which are very similar to the inner spaces of the spokes for receiving additional roller cutters.
  • the cutterhead may also be provided with radially elongate scoops 128 and a plate metal facing around the scoops and in between the radial beams 48. As shown by FIG. 2, the scoops have inlets for the mined material which commence adjacent the hub 32 and extend out to the periphery of the cutterhead.
  • the collector 74 at the forward end of the conveyor 72 is positioned relatively close behind the center cutter assembly 28.
  • the cuttings picked up by the scoops 128 drop into the collector 74. They fall onto the conveyor belt 130 and are carried thereby to a system of additional conveyors and/or material carts which remove the mined material out from the tunnel in one of a number of known ways.
  • One way of moving the conveyor out of the way would be to construct the conveyor so that it could be retracted in total from its operative position.
  • the rear end of the conveyor is mounted on wheels or the like, and the front end of the conveyor is normally connected to the cutterhead support 10.
  • the front end of the conveyor could be disconnected from the cutterhead support, and then the conveyor could be forced rearwardly.
  • the cutterhead support could be provided with some sort of bearing arrangement to support the front end portion of the conveyor for sliding movement.
  • the forward frame portion of the cutterhead which includes the material collector 74 and a forward pulley 132 on which the conveyor belt reverses its direction, are mounted to be movable relative to both the cutterhead support 10 and the rest of the conveyor.
  • a pair of tracks 134, 136 may be provided to extend axially of the tunnel on opposite sides of the conveyor 72.
  • a front end carriage 138 may be mounted for axial movement in the tunnel by means of rollers 140 which are engaged by the tracks 134,136.
  • the front end portion of the conveyorframe, including the material collector 74 and the front roller 132 are carried by the carriage 138.
  • the carriage 138 may be controlled in position by means of one or more hydraulic cylinders 142 (FIG.
  • the cylinders 142 are extended for the purpose of moving the collector into the material collecting position relative to the cutterhead. When in this position, the conveyor belt 130 is tightened. The cylinders 142 may be retracted for the purpose of moving the front portion of the conveyor rearwardly an amount sufficient to create sufficient working room within the inner space IS of the cutterhead (FIG. 14). Retraction of the cylinders 142 causes them to move the forward frame portion of the conveyor belt rearwardly, relative to both the cutterhead and the conveyor belt.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (10)

1. Traggestell für einen rotierenden Messerkopf einer Erdbohrmaschine mit einem Tragring (60), mit dem der Messerkopf (20) auf der Erdbohrmaschine um eine Drehachse drehbar gelagert ist, ferner mit einer zentral angeordneten Nabe (20), die vor dem Tragring (60) angeordnet ist, und mit mehreren radialen Speichen (48), die an ihren inneren Enden mit der Nabe (32) einstückig sind und die mittlere Teile besitzen, die sich von der Nabe (32) rückwärts und radial in dem Tragring (60) auswärts erstrecken, sowie äußere Enden, die mit dem Tragring (60) einstückig sind, so daß das Tragestell allgemein kuppelförmig ist, woebi jede der radialen Speichen (48) Seitenteile (50, 52) besitzt, die eine langgestreckte Öffnung begrenzen, die sich im wesentlichen über die ganze Länge der Speiche (48) und durch diese hindurch erstreckt.
2. Traggestell nach Anspruch 1, dadurch gekennzeichnet, daß der tragring (60) ein hohles Kastenprofil hat.
3. Traggestell nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Nabe (32) kastenförmig ist und Umfangswandteile (34, 36, 38, 40, 42, 44) besitzt, die eine zentrale Öffnung (47) begrenzen.
4. Traggestell nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Seitenteile jeder der radialen Speichen (48) zwei im Abstand voneinander angeordnete Seitenplatten (50, 52) aufweisen.
5. Traggestell nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Schneidrollenhalter (99) vorgesehen sind, die Wandteile (100, 102) besitzen, die sich quer über die langgestreckte Öffnung der Speichen erstrecken und die Seitenteile (50, 52) der Speichen (48) schneiden, um diese zu versteifen.
6. Rotierender Messerkopf für eine Erdbohrmaschine mit einem Traggestell, das einen Tragring (60) besitzt, mit dem der Messerkopf (20) auf der Erdbohrmaschine um eine Drehachse drehbar gelagert ist, ferner mit einer zentral angeordneten Nabe (32), die vor dem Tragring (60) angeordnet ist und eine zentrale Öffnung (47) hat, und mit mehreren radialen Speichen (48), die an ihren inneren Enden mit der Nabe (32) einstückig sind, sowie äußere Enden, die mit dem Tragring (60) einstückig sind, wobei jede der radialen Speichen (48) Seitenteile (50, 52) besitzt, die eine langgestreckte Öffnung begrenzen, die sich im wesentlichen über die ganze Länge der Speiche (48) und durch diese hindurch erstreckt, ferner mit in den radialen Speichen (48) angeordneten Schneidrollenhaltern (99), die Wände (100, 102) besitzen, die sich quer zu den radialen Speichen (48) und quer über deren Öffnung erstrecken, wobei die Schneidrollenhalter (99) unter Bildung von Schneidrollenaufnahmen und zum Verstärken der radialen Speichen (48) einen Ein- und Ausbau von Schneidrollen (26, 30) von der Rückseite des Messerkopfes ermöglichen und das Traggestell so ausgebildet ist, daß in seinem Innern ein Innenraum (IS) vorhanden ist, der einen Arbeiter aufnehmen kann und der so groß ist, daß er einen Ein- und Ausbau der Schneidrollen (26, 30) von der Rückseite des Messerkopfes (20) gestattet.
7. Rotierender Messerkopf nach Anspruch 6, dadurch gekennzeichnet, daß der Tragring (60) im wesentlichen die Form eines hohlen Torus hat.
8. Rotierender Messerkopf nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Seitenteile jeder der radialen Speichen (48) zwei im Abstand voneinander angeordnete Seitenplatten (50, 52) umfassen, die sich von der Nabe (32) zu dem Tragring (60) erstrecken und rückwärts gekrümmt sind.
9. Rotierender Messerkopf nach Anspruch 6, 7 oder 8, mit am Umfang des Messerkopfes angeordneten Kalibrier-Schneidrollen, dadurch gekennzeichnet, daß die radialen Speichen (48) sich von der Nabe (32) radial auswärts zu dem Tragring (60) erstrecken und in den Bereichen der Kalibrier-Schneidrollen (30) allgemein über dem Innenraum (IS) rückwärts gekrümmt sind, so daß der Messerkopf allgemein kuppelförmig ist, und an vor dem Tragring (60) gelegenen Stellen für die Kalibrier-Schneidrollen bestimmte Halter (99) vorgesehen sind, die allgemein vertikale Wege für den Ein- und Ausbau bestimmen.
10. Rotierender Messerkopf nach einem der Ansprüche 6 bis 9 mit einer zentralen Messeranordnung (28), die mehrere Schneidrollen (86) umfaßt, dadurch gekennzeichnet, daß der Messerkopf (20) Mittel (88, 92) zur Halterung der Schneidrollen (86) in der zentralen Öffnung (47) der Nabe (32) besitzt und Umfangsteile der Schneidrollen (86) von dem Traggestell des Messerkopfes nach vorn vorstehen.
EP80900050A 1979-08-14 1981-03-09 Rotierender schneidekopf für eine erdbohrmaschine Expired EP0034143B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1979/000605 WO1981000590A1 (en) 1979-08-14 1979-08-14 A rotary cutterhead for an earth boring machine

Publications (3)

Publication Number Publication Date
EP0034143A1 EP0034143A1 (de) 1981-08-26
EP0034143A4 EP0034143A4 (de) 1981-08-31
EP0034143B1 true EP0034143B1 (de) 1986-01-15

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Application Number Title Priority Date Filing Date
EP80900050A Expired EP0034143B1 (de) 1979-08-14 1981-03-09 Rotierender schneidekopf für eine erdbohrmaschine

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EP (1) EP0034143B1 (de)
JP (1) JPH0138959B2 (de)
DE (1) DE2967569D1 (de)
WO (1) WO1981000590A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113208C2 (de) * 1991-04-23 1995-04-06 Herrenknecht Gmbh Schildvortriebsmaschine
SE507665C2 (sv) * 1994-02-02 1998-06-29 Disab Vacuum Technology Ab Anordning, förfarande och borrhuvud för torr fullareaborrning
AU747836B2 (en) * 1999-02-25 2002-05-23 Wirth Maschinen- Und Bohrgerate-Fabrik Gmbh Advancing device for boring sections of roadway, tunnels or similar
CN111122370A (zh) * 2019-12-31 2020-05-08 中铁工程服务有限公司 一种可模拟tbm刀盘偏载工况的试验装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023487A1 (de) * 1979-02-05 1981-02-11 Robbins Co Rotierender schneidekopf für eine erdbohrmaschine.

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Publication number Priority date Publication date Assignee Title
US2811341A (en) * 1955-04-25 1957-10-29 Goodman Mfg Co Tunneling machine rotary head having shearing blades on oppositely rotating head portions
US2766978A (en) * 1955-04-25 1956-10-16 Goodman Mfg Co Rotary head tunneling machine having oppositely rotating head portions
US3061289A (en) * 1959-11-13 1962-10-30 Goodman Mfg Co Rotary head tunneling machine
US3134580A (en) * 1961-07-07 1964-05-26 Mid States Tool & Mfg Company Tunnel machine
US3237990A (en) * 1962-06-20 1966-03-01 Robbins & Assoc James S Head structure for rock drilling machine
US3309142A (en) * 1963-05-31 1967-03-14 Robbins & Assoc James S Cutterhead assembly for a shield-type tunneling machine
US3413033A (en) * 1966-09-09 1968-11-26 Smith Ind International Inc Rotary tunneling machine having improved debris disposal means
US3444939A (en) * 1967-12-11 1969-05-20 Karl Gunther Bechem Cutting roller in particular roller-type enlarging bits
US3653716A (en) * 1969-10-10 1972-04-04 Robbins & Assoc James S Roller butter rock boring apparatus and method
US3756332A (en) * 1971-11-01 1973-09-04 Robbins Co Disc type center cutter for a boring machine
IT1053909B (it) * 1976-02-02 1981-10-10 Grandori Carlo Perfezionamento nelle macchine per lo scavo meccanico di gallerie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023487A1 (de) * 1979-02-05 1981-02-11 Robbins Co Rotierender schneidekopf für eine erdbohrmaschine.

Also Published As

Publication number Publication date
JPH0138959B2 (de) 1989-08-17
DE2967569D1 (en) 1986-02-27
WO1981000590A1 (en) 1981-03-05
JPS56501052A (de) 1981-07-30
EP0034143A1 (de) 1981-08-26
EP0034143A4 (de) 1981-08-31

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