EP4048865A1 - Housing mount assembly for a roller cutter - Google Patents
Housing mount assembly for a roller cutterInfo
- Publication number
- EP4048865A1 EP4048865A1 EP20879353.9A EP20879353A EP4048865A1 EP 4048865 A1 EP4048865 A1 EP 4048865A1 EP 20879353 A EP20879353 A EP 20879353A EP 4048865 A1 EP4048865 A1 EP 4048865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- removable
- roller cutter
- housing mount
- seat support
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 230000000295 complement effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Definitions
- a tunnel boring machine (“TBM”) is used to create tunnels in soil or rock.
- a conventional TBM includes a rotatably driven cutting head that supports a plurality of roller cutter assemblies, which are intended to be replaced when worn down.
- roller cutter assembly is disclosed in Figure 1 of US 2018 / 0258764 to Lenaburg.
- this roller cutter assembly is typically welded onto the TBM, which makes in situ removal time consuming and difficult.
- the need to weld the roller cutter assembly to the TBM reduces the available options for materials that can be used for the roller cutter assembly.
- a housing mount assembly for supporting a roller cutter, the housing mount assembly comprising: (i) a housing mount defining an outer surface for attaching to a housing and a profiled inner surface extending away from the outer surface, the profiled inner surface defining a channel extending in a longitudinal direction, and a seat support block extending away from the outer surface and defining a first seat support surface transverse to the channel, and a second seat support surface transverse to the first seat support surface; (ii) a removable seat mounted on the seat support surfaces and defining two transverse roller cutter shaft support surfaces whereby the removable seat and the seat support block together provide support for a roller cutter shaft; and (iii) an engagement device for releasably holding the removable seat in proximity to the seat support surfaces.
- the engagement device may be located between the removable seat and the outer surface.
- the housing mount may further define a recess in which the engagement device is mounted.
- the recess may be located above the seat support block so that it is located behind the removable seat when assembled.
- the engagement device may comprise a magnet, a spring clip coupling, a snap fit coupling, a deformable (elastic) material mounted in a perimeter of the recess to provide an interference fit for the removable seat when inserted therein, an adhesive for coupling the removable seat to the recess or other portion of the housing mount, a bolt extending through an aperture defined by the removable seat and engaging with a complementary thread in the profiled inner surface of the housing mount, or any other convenient mechanical coupling.
- the aperture may comprise a slot, for example, extending generally parallel with the channel, to allow some movement of the removable seat during use.
- the bolt may initially be located at a lower portion of the slotted aperture to allow the bolt to rise up the slotted aperture as the removable seat wears during use.
- one purpose of the engagement device may hold the removable seat in position during assembly of the parts of a roller cutter assembly, where the roller cutter assembly comprises a roller cutter mounted between opposing complementary housing mounts, and held together by two retaining couplings, optionally in the form of bolt and wedge sets, each bolt being partially located within, or adjacent to, a channel.
- the second seat support surface may be obliquely transverse to the first seat support surface.
- the second seat support surface and a removable seat sidewall may define complementary surfaces to enable the second seat support surface to assist in retaining the removable seat in place.
- the second seat support surface may be tapered inwardly (i.e. inclined towards the channel as the seat support surface extends away from the outer surface); and the removable seat may define a tapered sidewall corresponding to the tapered second seat support surface so that the removable seat is retained in place by the mutual interaction of the tapered surfaces.
- the housing mount may comprise cast or forged iron or steel to facilitate welding of the housing mount to a housing of a tunnel boring machine.
- the housing mount assembly may further comprise a removable insert mounted on an opposite side of the channel to the removable seat, wherein part of the retaining coupling acts against the removable insert and an opposite part of the retaining coupling acts against a shaft of the roller cutter.
- the removable seat (and or the removable insert) may comprise a high hardness metal or alloy as there is no requirement to weld the removable seat. This has the advantage of improving the wear resistance, and therefore the useful life, of the housing mount assembly.
- an assembly for a roller cutter comprising: a pair of complementary housing mounts as set forth in the first aspect.
- a roller cutter assembly comprising a roller cutter mounted in the assembly of the second aspect and held in place by a pair of retaining couplings.
- Each retaining coupling may comprise: (i) a bolt extending through the longitudinal channel securing (ii) a wedge at one end thereof and (iii) a clamp block abutting a clamping surface defined by the housing mount.
- the wedge may abut an angled face of the roller cutter shaft to maintain the roller cutter shaft in contact with the transverse roller cutter shaft support surfaces defined by the removable seat.
- the removable seat can be made from a very hard material because it does not need to be welded; thereby allowing the useful life of the seat to be increased.
- Figure 1 is a simplified, exploded perspective view of part of a roller cutter assembly according to one embodiment of the present invention
- Figure 2 is a simplified, front elevation view of the roller cutter assembly parts of Figure 1 in assembled form (with one part shown partly in broken line);
- Figure 3 is a simplified, side view of the roller cutter assembly parts of Figure 1 in assembled form
- Figure 4 is a simplified, plan view of a complete roller cutter assembly comprising the housing mount assembly parts and roller cutter shown in Figure 1 in assembled form and a complementary housing mount;
- Figure 5 is a simplified perspective view of an alternative part for use in a roller cutter assembly according to another embodiment of the present invention.
- FIGS 1 to 3 show various views of parts of a roller cutter assembly 10 according to one embodiment of the present invention.
- the roller cutter assembly 10 comprises a pair of complementary housing mounts 12 (only one of which (12a) is shown in Figures 1 to 3, the other housing mount is shown in Figure 4), each of which is a mirror image of the other.
- the housing mounts 12 are typically permanently fixed to the TBM cutter wheel (not shown), usually by a welding joint but a mechanical coupling may be used.
- the housing mounts 12 are typically made of steel, but other materials may be used.
- Figure 4 is a simplified, plan view of a complete roller cutter assembly comprising the parts of Figure 1 and the complementary housing mount 12b, all in assembled form.
- the housing mount 12a comprises an outer surface 14 (best seen in Figures 3 and 4), and a profiled inner surface 16 on an opposite side of the housing mount 12 to the outer surface 14.
- the purpose of the profiled inner surface 16 is to secure in place various removable parts of the roller cutter assembly 10. These removable parts include: a roller cutter 20, a seat 22, an insert 24, and a retaining coupling 26.
- the combination of the housing mount 12a, the seat 22, and the insert 24 are referred to as a housing mount assembly.
- the combination of two complementary housing mount assemblies having the roller cutter therebetween retained in place by the retaining coupling 26 is a roller cutter assembly 10.
- the profiled inner surface 16 thereof partially defines a channel 30 extending in a longitudinal direction (indicated by broken line 32).
- the channel 30 is defined by a seat support block 34 and an insert support block 36 of the profiled inner surface 16, and also by the seat 22 and the insert 24 when installed.
- Figure 1 illustrates by broken leader lines where the seat 22 and the insert 24 are located on the housing mount 12a when fully assembled.
- the seat 22 and optionally the insert 24 are made from a high hardness alloy and are held, at least temporarily during the assembly process, in place by an engagement device (or mechanism) 40.
- the engagement device 40 comprises magnetised portions (shown delineated by broken line 40) of the housing mount 12 that attract the seat 22 and the insert 24.
- High hardness alloys can be used because there is no requirement to weld the seat 22 or insert 24 to the housing mount 12.
- the housing mount 12 may define a recess behind the final location of the seat 22, and a magnet may be located in this recess, or an alternative engagement device, such as a spring clip may be located in this recess.
- the seat 22 and/or insert 24 may include a magnetised portion (optionally in the form of a removable magnet or a local magnetised area) that engages with the housing mount 12 (which includes portions attracted to magnets and located opposite the seat and insert magnetised portions), thereby providing an engagement device.
- the roller cutter 20 (which is a conventional roller cutter) may be mounted on the seat 22 (best seen in Figure 2). For clarity (to prevent obscuring other parts), the roller cutter 20 is shown in broken line.
- the roller cutter 20 is positioned to engage the tunnel face during tunnel boring operations.
- the roller cutter 20 comprises a cutter ring 50 mounted on a hub 52 rotatable about a shaft 54.
- the shaft 54 defines a pair of mutually transverse flat surfaces 56a, b and an angled surface 58 opposite an area where the flat surfaces 56a, b are closest.
- the seat support block 34 defines a pair of engagement surfaces 60a, b (best seen in Figures 1 and 4) for receiving the seat 22.
- the first engagement surface 60a also referred to as the horizontal seat support surface
- the second engagement surface 60b also referred to as the vertical seat support surface
- the portion of the vertical engagement surface 60b that is nearest the outer surface 14 is further from the channel 30 than the portion of the vertical engagement surface 60b that is furthest from the outer surface 14.
- the seat 22 also defines a pair of outer support surfaces 62a, b (also referred to as base 62a and sidewall 62b), and a pair of inner support surfaces 64a, b (also referred to as shaft support surfaces).
- the base 62a is complementary, and of similar dimensions, to the horizontal seat support surface 60a, and the sidewall 62b is angled in a complementary manner (and is of similar dimensions) to the vertical seat support surface 60b, thereby providing a closely fitting engagement when the seat 22 is mounted on the seat support block 34.
- the complementary angles of the sidewall 62b and the vertical seat support surface 60b function as a draft to ensure that the seat 22 is hindered from moving away from the housing mount 12.
- the shaft support surfaces 64a, b of the removable seat 22 are mutually transverse (horizontal and vertical in this embodiment) and of similar dimensions to the shaft flat surfaces 56a, b, but are slightly longer (best seen in Figure 2), thereby ensuring a close-fitting connection.
- the insert support block 36 defines a pair of insert support surfaces 66a, b for receiving the insert 24.
- the horizontal surface 66a is flat, and the vertical surface 66b is angled in an opposite (complementary) manner to the vertical seat support surface 60b (best seen in Figure 4).
- the insert 24 defines a pair of outer support surfaces 68a, b (also referred to as base 68a and sidewall 68b), and an inner support surface 70.
- the insert base 68a is complementary, and of similar dimensions, to the horizontal insert support surface 66a, and the insert sidewall 68b is angled in a complementary manner (and is of similar dimensions) to the vertical insert support surface 66b, thereby providing a closely fitting engagement when the insert 24 is mounted on the insert support block 36.
- the complementary angles of the insert sidewall 68b and the vertical insert support surface 66b function as a draft to ensure that the insert 24 is hindered from moving away from the housing mount 12.
- the seat support block 34 also defines a clamping surface 72a transverse to the longitudinal direction 32 and at an opposite end of the seat support block 34 to the horizontal seat support surface 60a.
- the insert support block 36 also defines a clamping surface 72b transverse to the longitudinal direction 32 and at an opposite end of the insert support block 36 to the horizontal insert support surface 66a.
- the seat 22 is located on the seat support block 34, the insert 24 is located on the insert support block 36 (both are held in place by the magnetised portions 40), and then the retaining coupling 26 is used to move the roller cutter 20, seat 22 and insert 24 into the correct positions and to hold them in place on a permanent basis.
- the retaining coupling 26 comprises a wedge 80 and a clamp block 82 releasably coupled together by a threaded bolt 84 that passes through apertures in the wedge 80 and clamp block 82, and is secured by a pair of nuts 86.
- the wedge 80 defines an upright surface 90 parallel to the longitudinal direction 32 and an angled surface 92.
- the wedge angled surface 92 defines the same angle as the shaft angled surface 58, and the wedge upright surface 90 matches the insert inner support surface 70, to ensure a close-fitting connection.
- the wedge 80 can be placed between the shaft 54 and the insert 24, the bolt 84 can be inserted through both the wedge 80 and the clamp block 82 (which abuts the clamping surfaces 72a, b), and then the pair of nuts 86 can be tightened.
- Tightening the nuts 86 urges the wedge 80 downwards, which urges the shaft 54 against the removable seat 22.
- the first draft provided by the sidewall 62b and the vertical seat support surface 60b, and the second draft provided by insert sidewall 68b and the vertical insert support surface 66b, assist in maintaining the roller cutter 20, seat 22, insert 24, and retaining coupling 26 in position.
- a complementary housing mount 12 can then be coupled to the other side of the shaft 54 in a similar manner to provide a complete roller cutter assembly ready for installation in a TBM.
- a roller cutter assembly is subjected to very high forces during tunnel boring operations.
- One typical failure mechanism is the point at which the shaft of a roller cutter is supported on a housing mount.
- This embodiment has the advantage that the roller cutter assembly 10 can be easily disassembled and the worn seat 22 easily removed and replaced with a new seat 22.
- FIG. 5 is a perspective view of an alternative removable seat 122.
- the removable seat 122 couples to a housing mount 112a (similar to housing mount 12a) defining a screw threaded aperture therein (shown as broken line 123, which is in a similar location to the engagement device 40 location in Figure 1).
- the removable seat 122 defines an aperture 125 in the form of a slot extending generally parallel to the channel 30 (i.e. in the longitudinal direction indicated by broken line 32 in Figure 1).
- a bolt 127 having a complementary thread to screw threaded aperture 123, extends through the slot 125 (along axis 129) to secure the removable seat 122 in place against the housing mount 112a.
- the bolt 127 and screw threaded aperture 123 provide an engagement device to retain the removable seat 122 in position.
- a base 162a of the removable seat 122 rests on a first engagement surface 160a (also referred to as the horizontal seat support surface 160a).
- the slot 125 is configured such that the bolt 127 is initially near the lower end of the slot 125.
- the wear primarily occurs at the base 162a, which results in the removable seat 122 moving downwards, and the bolt 127 effectively rising upwards in the slot 125.
- the slot 125 therefore allows the removable seat 122 to have a degree of movement during operation of the roller cutter assembly.
- Roller cutter assembly 10 Vertical seat support surface 60b Housing mount 12, 112 Seat base 62a, 162a Outer surface 14 25 Seat sidewall 62b Profiled inner surface 16 Seat shaft support surfaces 64a, b Roller cutter 20 Horizontal insert support surface 66a Seat 22, 122 Vertical insert support surface 66b Insert 24 Insert base 68a
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962926387P | 2019-10-25 | 2019-10-25 | |
PCT/US2020/057159 WO2021081399A1 (en) | 2019-10-25 | 2020-10-23 | Housing mount assembly for a roller cutter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4048865A1 true EP4048865A1 (en) | 2022-08-31 |
EP4048865A4 EP4048865A4 (en) | 2023-11-15 |
Family
ID=75541177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20879353.9A Withdrawn EP4048865A4 (en) | 2019-10-25 | 2020-10-23 | Housing mount assembly for a roller cutter |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220412215A1 (en) |
EP (1) | EP4048865A4 (en) |
CN (1) | CN112709580A (en) |
CA (1) | CA3155454A1 (en) |
WO (1) | WO2021081399A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115949421A (en) * | 2023-01-31 | 2023-04-11 | 盾科工程装备有限公司 | Cutter head structure for micro shield machine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7823657B2 (en) * | 2008-01-15 | 2010-11-02 | Abergeldie Holdings Pty Ltd/Abergeldie Plant Pty Ltd. | Drilling assembly, drilling reamer arm assembly, and methods of drilling |
RU2455490C1 (en) * | 2008-05-30 | 2012-07-10 | Дзе Роббинс Компани | Device and method to monitor efficiency of tunnelling |
DE102011114830B3 (en) * | 2011-10-05 | 2013-03-07 | Herrenknecht Ag | Apparatus for monitoring the rotational condition of a cutting roller assembly of a shield tunneling machine and cutting roller assembly for a shield tunneling machine |
JP5898483B2 (en) * | 2011-12-19 | 2016-04-06 | 川崎重工業株式会社 | Cutter holder for roller cutter |
CN204984428U (en) * | 2015-09-02 | 2016-01-20 | 昆山众备机械设备有限公司 | Shield constructs quick -witted hobbing cutter mechanism |
WO2017075266A1 (en) * | 2015-10-28 | 2017-05-04 | The Robbins Company | Cutter assembly with inline mounting |
CN205422726U (en) * | 2016-02-02 | 2016-08-03 | 中铁工程装备集团有限公司 | Novel TBM's circular cutter case |
CN106150515B (en) * | 2016-08-31 | 2018-02-09 | 中国水利水电第八工程局有限公司 | Rock tunnel(ling) machine back loading type disk cutter fastener |
CN106285707B (en) * | 2016-09-18 | 2019-02-22 | 中铁工程装备集团有限公司 | A kind of extension type side hobboing cutter girff |
US10539017B2 (en) * | 2017-03-10 | 2020-01-21 | The Robbins Company | Cutter housing with field-replaceable seats |
-
2020
- 2020-02-10 CN CN202010084214.7A patent/CN112709580A/en active Pending
- 2020-10-23 US US17/771,475 patent/US20220412215A1/en active Pending
- 2020-10-23 WO PCT/US2020/057159 patent/WO2021081399A1/en active Search and Examination
- 2020-10-23 EP EP20879353.9A patent/EP4048865A4/en not_active Withdrawn
- 2020-10-23 CA CA3155454A patent/CA3155454A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CA3155454A1 (en) | 2021-04-29 |
EP4048865A4 (en) | 2023-11-15 |
CN112709580A (en) | 2021-04-27 |
US20220412215A1 (en) | 2022-12-29 |
WO2021081399A1 (en) | 2021-04-29 |
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A4 | Supplementary search report drawn up and despatched |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: E21C 35/19 20060101ALI20231006BHEP Ipc: E21D 9/10 20060101ALI20231006BHEP Ipc: E21D 9/087 20060101AFI20231006BHEP |
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18W | Application withdrawn |
Effective date: 20240123 |