CN107740695A - A kind of novel shield hobboing cutter - Google Patents

A kind of novel shield hobboing cutter Download PDF

Info

Publication number
CN107740695A
CN107740695A CN201711008998.XA CN201711008998A CN107740695A CN 107740695 A CN107740695 A CN 107740695A CN 201711008998 A CN201711008998 A CN 201711008998A CN 107740695 A CN107740695 A CN 107740695A
Authority
CN
China
Prior art keywords
cutter
ring
cutter hub
bearing block
seal
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.)
Granted
Application number
CN201711008998.XA
Other languages
Chinese (zh)
Other versions
CN107740695B (en
Inventor
甘威
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.)
CHANGDE ZHONGTIAN PRECISION TOOL CO LTD
Original Assignee
CHANGDE ZHONGTIAN PRECISION TOOL CO LTD
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 CHANGDE ZHONGTIAN PRECISION TOOL CO LTD filed Critical CHANGDE ZHONGTIAN PRECISION TOOL CO LTD
Priority to CN201711008998.XA priority Critical patent/CN107740695B/en
Publication of CN107740695A publication Critical patent/CN107740695A/en
Application granted granted Critical
Publication of CN107740695B publication Critical patent/CN107740695B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08Making 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/78Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention discloses a kind of novel shield hobboing cutter, including cutter ring, cutter hub, dynamic support component of turning left and dynamic support component of turning right;It is described turn left and right support component structure it is identical and be located at the both sides of cutter hub respectively, dynamic support component of turning left includes bearing block, taper roll bearing, float grease seal seat and flange plate.The taper roll bearing of both sides is installed face-to-face, and respectively in the bearing block of both sides, float grease seal seat is between taper roller inner ring and bearing block;Dust-proof seal ring is each mounted between bearing block side and cutter hub, reverse metal float grease seal is mounted between each bearing block opposite side and cutter hub.Shield hobboing cutter of the present invention uses cutter shaft cutter hub integrated design, and two sleeve bearing surface opposites are installed, and employs dual-seal design, makes the higher intensity of hobboing cutter, sealing reliability and stability more preferable.

Description

A kind of novel shield hobboing cutter
Technical field
The present invention relates to a kind of cutter of shield machine, and in particular to a kind of novel shield on cutter head of shield machine Hobboing cutter.
Background technology
Shield machine as a kind of high-end equipment of advanced, efficient, environmentally friendly set of tunneling construction, with its automaticity it is high, Drivage efficiency height, construction safety, the advantages that small is disturbed to rock stratum around as city underground, highway, municipal piping lane, water conservancy and hydropower Deng the first choice equipment of engineering tunnel tunneling construction.And " tooth " of the shield cutter as shield machine, on cutter head panel, press Arranged before different tracks radius is convex, directly contacted with ground, be the critical component of shield machine tunneling construction.
Shield hobboing cutter is a kind of broken rock cutter, mainly acts on attrition crushing rock to the rolling compaction of rock stratum by cutter ring, The quality of shield hobboing cutter performance directly determines the efficiency of breaking rock of shield machine.The mark of wide variety of shield hobboing cutter currently on the market Quasi- structure, as shown in figure 3, be to be arranged on two sets of taper roll bearings in the inner chamber of same cutter hub back-to-back, cutter ring assembling On cutter hub is cylindrical.Cutter shaft is motionless during work, and cutter ring rotates with cutter hub and bearing outer ring around cutter shaft, while hobboing cutter is with knife Cutter head center revolution is coiled, to reach the purpose of fractured rock.But the following defect of hobboing cutter generally existing of existing structure:First, Limited by bearing, cutter ring fitted position so that the wall thickness of cutter hub is also restrained;Inadequate then its structural strength of cutter hub wall thickness Not enough, carrying in larger or larger shock loading work condition environment, easily occurring causing knife because cutter hub deforms, collapses broken, fracture The problem of body damage failure.2nd, because two sets of taper roll bearings are arranged on same cutter hub inner chamber, only floated by both sides metal Seal to seal, the reliability and stability of sealing are poor, the problem of seal failure often occur;Once seal failure, silt Cutter hub inner chamber will be entered from cutter hub side, bearing is stuck, damage so as to causing, and hobboing cutter is forced to be stopped.3rd, current hobboing cutter The dynamic sealing of both sides is to use traditional metal float grease seal, as shown in figure 4, including two symmetrical beckets, two metals Be affixed between ring by the sealing surface of high flatness and roughness, form a dynamic sealing interface at an upper portion thereof, becket with Pressure is transmitted by the O-ring seal of compression between sealing die cavity, to ensure that seal interface is brought into close contact realization sealing.It is but this Sealing can only use under work condition environment of the inside and outside differential pressure less than 0.3Mpa, when edpth of tunnel is larger in the work progress of reality When, extra large river-crossing tunnel was such as built, often occurs that inside and outside differential pressure is more than 0.3MPa situation.Therefore, when extraneous and inside When pressure differential is more than 0.3MPa, the O-ring seal positioned at closed type intracavitary can push die cavity openings to by the pressure that outside applies To O-ring seal crimp causes seal failure after sliding, mud enters inside hobboing cutter, so as to cause hobboing cutter to damage.4th, The hobboing cutter of existing structure, end cap is although equipped with the both sides of its taper roll bearing, but because two sets of taper roll bearings are pacified Mounted in same cutter hub inner chamber, once breaking down, roller bearing, cutter shaft, cutter hub, oil sealing can only be removed one by one, could be right Repair and replacement are carried out at failure, therefore are repaired comparatively laborious and with high costs.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of hob cutter for shield machine of brand new, the hobboing cutter Using cutter shaft cutter hub integrated design, bearing is installed face-to-face, and employs dual-seal design, makes the intensity of hobboing cutter more High, sealing reliability and stability are more preferable.
To achieve these goals, the present invention adopts the following technical scheme that:
A kind of novel shield hobboing cutter, it is characterised in that including cutter ring, cutter hub, dynamic support component of turning left and dynamic support component of turning right; The cutter hub is integrated hub structure, i.e. cutter hub integrates with former cutter shaft.It is described to turn left to move support component and turn right dynamic Support component is located at the both sides of cutter hub respectively, dynamic support component of turning left include bearing block, taper roll bearing, float grease seal seat and Flange plate, the taper roll bearing include taper roller outer ring and taper roller inner ring, the structure for dynamic support component of turning right Dynamic support component is identical with turning left.The taper roll bearing of both sides is installed face-to-face, and respectively in the bearing block of both sides, two The outside of the bearing block of side is separately installed with flange plate by screw, and float grease seal seat is located at taper roller inner ring and bearing block Between.Dust-proof seal ring is each mounted between bearing block side and cutter hub, between each bearing block opposite side and cutter hub Reverse metal float grease seal is installed, reverse metal float grease seal includes two symmetrical beckets, two sealing die cavities, each Closed type intracavitary is equipped with O-ring seal, and one of becket and sealing die cavity are located on float grease seal seat, another gold Category ring and sealing die cavity are located on bearing block, and the bottom on the inside of two beckets is affixed, and forms a seal interface.
Further, it is airtight cavity inside bearing block, lubricating oil is filled with bearing block.
Further, the cutter ring interference hot charging cutter hub it is cylindrical on, clasp power to keep enough, prevent cutter ring with Cutter hub relatively rotates.
Further, back-up ring is installed between the cutter ring and cutter hub, moving is even de- not from cutter hub to ensure cutter ring Fall.
Further, the taper roller inner ring with alignment pin retaining ring by being arranged on the spindle nose of cutter hub, the circle Bore roller outer ring to be arranged in bearing block, taper roller inner ring forms revolute pair with taper roller outer ring.
Further, it is provided with O-ring seal one between the float grease seal seat and cutter hub spindle nose, it is ensured that external environment mud Water does not enter closed type intracavitary portion by the gap between float grease seal seat and cutter hub.
Further, the step of the flange plate it is cylindrical on be provided with O-ring seal two, it is ensured that external environment muddy water is not Closed type intracavitary portion is entered by the gap between flange plate and bearing block.
Compared with prior art, the advantage of the invention is that:
1st, the monoblock type cutter hub of wheel hub structure, it is to integrate the cutter shaft of existing hobboing cutter and cutter hub, so as to add cutter hub Intensity and rigidity, carrying larger or hitting in larger work condition environment, cutter hub deformation, which occurs, in reduction, collapses broken, fracture etc. leads Cause the situation of cutter hub damage.
2nd, existing two sets of bearings of hobboing cutter are shared into a cutter hub inner chamber, is changed to two sets of bearings and takes two independent chambers respectively Body, and do not connected each other between two cavitys, it is lubricated respectively, improves the stability and reliability of operating.
3rd, two sets of bearings are respectively in each independent cavity, when operational maintenance or breakdown maintenance, due to two cavitys Between do not connect each other, therefore be not required to remove all parts simultaneously, maintenance is convenient.In the course of work, even if wherein a set of Bearing hinders for some reason to be caused to damage, and other set bearing can also be continuing with.
4th, double-layer sealing structure is employed, the sealing reliability and stability of cutter hub are more preferable.Between bearing block and cutter hub Dust-proof seal ring is mounted with, as the first seal structures for completely cutting off extraneous dust and dregs.Second sealing is using reversely gold Belong to float grease seal, can further prevent silt, mud from entering cutter hub inner chamber, avoid because debris entrance cause bearing it is stuck, The phenomenon of damage, extend the service life of hobboing cutter.
5th, the reverse metal float grease seal that uses of the present invention is compared with traditional metal float grease seal that existing hobboing cutter uses, Its sealing effectiveness is more preferable, and its reason is the structure for revolutionizing existing hobboing cutter so that external pressure enters inside cutter hub Path is different from entering the path inside traditional hobboing cutter, pressure is transmitted by the O-ring seal of compression, to ensure two beckets The seal interface of inner side is brought into close contact, so as to realize sealing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention
Fig. 2 is the overall structure section of the present invention
Fig. 3 is existing hobboing cutter overall structure profile
Fig. 4 is the partial enlarged drawing at Fig. 3 B
Fig. 5 is the partial enlarged drawing at Fig. 2A
In figure:1st, cutter ring, 2, back-up ring, 3, cutter hub, 4, bearing block, 5, flange plate, 6, band alignment pin retaining ring, 7, taper roller Inner ring, 8, taper roller outer ring, 9, O-ring seal two, 10, screw, 11, O-ring seal one, 12, float grease seal seat, 13, anti- To metal float grease seal, 13.1, becket, 13.2, sealing die cavity, 13.3, O-ring seal, 13.4, seal interface, 13.5, type Chamber opening, 14, dust-proof seal ring, 15, end cap, 16, taper roll bearing, 17, cutter shaft, 18, bearing inner race, 19, bearing outer ring, 20th, common float grease seal, 20.1, becket, 20.2, sealing die cavity, 20.3, O-ring seal, 20.4, seal interface, 20.5, Die cavity opening.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, what is recorded below is only being preferable to carry out for the present invention Example, the interest field of the present invention, therefore the equivalent variations made according to the claims in the present invention can not be limited with this certainly, still The scope that the category present invention is covered.
A kind of novel shield hobboing cutter, as shown in Figure 1 and Figure 2, including cutter ring 1, cutter hub 3, dynamic support component of turning left and right-hand rotation are dynamic Support component.The cutter hub 3 is integrated hub structure, and the structure is independently setting the cutter hub 3 of existing hobboing cutter and cutter shaft 17 Meter, as shown in figure 3, be changed to cutter hub, cutter shaft unitary design, will former cutter hub integrate formula cutter hub 3 with cutter shaft, so as to increase The intensity and rigidity of cutter hub 3 are added, have carried larger or hitting in larger work condition environment, reduction cutter hub 3 occurs and deforms, collapses Broken, fracture etc. causes the situation that cutter hub 3 damages.
The interference hot charging of cutter ring 1 cutter hub 3 it is cylindrical on, clasp power to keep enough, prevent cutter ring 1 and cutter hub 3 Relatively rotate.Back-up ring 2 is installed between the cutter ring 1 and cutter hub 3, to ensure cutter ring 1 not from moving on cutter hub 3 or even take off Fall.
Described to turn left to move the both sides that support component is located at cutter hub 3 with dynamic support component of turning right respectively, support component is moved in right-hand rotation Structure it is identical with dynamic support component of turning left.Existing two sets of taper roll bearings 16 of hobboing cutter are shared into an inner chamber of cutter hub 3, such as schemed Shown in 3, be changed to two sets of roller bearings and take two independent cavitys respectively, as depicted in figs. 1 and 2, and between two cavitys that This is not connected, and is lubricated respectively, improves the stability and reliability of hobboing cutter operating.
Dynamic support component of turning left includes bearing block 4, taper roll bearing, float grease seal seat 12 and flange plate 5.The circle Taper roller bearing includes taper roller outer ring 8 and taper roller inner ring 7, and taper roller inner ring 7 is pacified by band alignment pin retaining ring 6 On the spindle nose of cutter hub 3, taper roller outer ring 8 is arranged in bearing block 4, taper roller inner ring 7 and the shape of taper roller outer ring 8 Into revolute pair.The inside of bearing block 4 is airtight cavity, and lubricating oil is filled with bearing block 4.
The taper roll bearing of both sides is installed face-to-face, and respectively in the bearing block 4 of both sides, the bearing block 4 of both sides Outside flange plate 5 is separately installed with by screw 10, float grease seal seat 12 be located at taper roller inner ring 7 and bearing block 4 it Between.
Dust-proof seal ring 14 is mounted between the side of each bearing block 4 and cutter hub 3, as the extraneous dust of isolation and slag First seal structures of soil.
Reverse metal float grease seal 13 is mounted between the opposite side and cutter hub 3 of each bearing block 4, reverse metal floats Oil sealing 13 includes two symmetrical 13.1, two sealing die cavities 13.2 of becket, is equipped with each sealing die cavity 13.2 O-shaped close Seal 13.3, one of becket 13.1 and sealing die cavity 13.2 are located on float grease seal seat 12, another becket 13.1 are located on bearing block 4 with sealing die cavity 13.2, and the bottom of two inner sides of beckets 13.1 is affixed, and forms a seal interface 13.4.Reverse metal float grease seal 13 is used as the second seal structures, can further prevent silt, mud from entering the inner chamber of cutter hub 3, Avoid causes the phenomenon that bearing is stuck, damages because debris enters, and extends the service life of hobboing cutter.
O-ring seal 1 is provided between float grease seal seat 12 and cutter hub 3 spindle nose, it is ensured that external environment muddy water is not Entered by the gap between float grease seal seat 12 and cutter hub 3 inside sealing die cavity 13.2.
O-ring seal 29 is provided with the step of the flange plate 5 is cylindrical, it is ensured that external environment muddy water does not pass through method Gap between blue cover plate 5 and bearing block 4 enters inside sealing die cavity 13.2.
The present invention revolutionizes the structure of existing hobboing cutter, is in particular in:
First, the cutter ring 1 of existing hobboing cutter is integrated with cutter hub 3, as shown in figure 3, work when cutter shaft 17 it is motionless, cutter ring 1 with cutter hub 3 with And bearing outer ring 19 rotates around cutter shaft 17 together.The present invention is that former cutter hub and cutter shaft are integrated into formula wheel hub structure, such as Fig. 1 Shown in Fig. 2, cutter ring 1 rotates with monoblock type cutter hub 3, and rigidity is more preferable, more resistant to impact.
2nd, existing two sets of bearings 16 of hobboing cutter share a cutter hub inner chamber, and two sets of bearings of the invention take two independences respectively Cavity, and do not connected each other between two cavitys.
The present invention carries out above-mentioned change to hob-cutter structure so that the path that external pressure enters inside cutter hub is with entering tradition Path inside hobboing cutter is different.Change in location such as Fig. 4 of the O-ring seal when external pressure increases of common metal float grease seal 20 Path shown, that the trend that arrow indicates in figure enters inside cutter hub for external pressure.External pressure from the side of cutter hub 3 with Enter between bearing block 4, the O-ring seal 20.3 in sealing die cavity 20.2 can push die cavity opening direction to by pressure 20.5, the crimp of O-ring seal 20.3 causes seal failure after sliding, mud enters inside hobboing cutter, so as to cause hobboing cutter to damage It is bad.And the change in location such as Fig. 5 institutes for reverse metal float grease seal 13 O-ring seal when external pressure increases that the present invention uses Show, the path that the trend that arrow indicates in figure enters inside cutter hub for external pressure.External pressure is from the top of cutter hub 3 and axle Enter between bearing 4, respectively to two pressuring directions of sealing die cavity opening 13.5, two O-ring seals 13.3 all can be by pressure Push to seal the other end of die cavity 13.2, to ensure that the seal interface 13.4 of two lower insides of becket 13.1 is brought into close contact, from And realize sealing.
By the change of above-mentioned hob-cutter structure, the present invention is used general using reverse metal float grease seal 13 with existing hobboing cutter Logical metal float grease seal 20 is compared, and its sealing effectiveness is more preferable.
In addition, the seal interface 20.4 of existing common metal float grease seal 20 is in the upper of two inner side of becket 20.1 Portion, the seal interface 13.4 of the reverse metal float grease seal 13 of the present invention is in the bottom of two inner side of becket 13.1.Will sealing Interface 13.4 is arranged at the bottom of the inner side of becket 13.1, more conducively sealing surface stability under loading.The top of seal interface 13.4 is formed Low-angle inclined-plane be easier guide lubricating oil sealing surface is entered by capillarity, to reach optimal lubricant effect.

Claims (7)

1. a kind of novel shield hobboing cutter, it is characterised in that including cutter ring, cutter hub, turn left dynamic support component and right rotational support group Part;The cutter hub is integrated hub structure, i.e. cutter hub integrates with former cutter shaft;
Described to turn left to move the both sides that support component is located at cutter hub with dynamic support component of turning right respectively, the structure of support component is moved in left-hand rotation Dynamic support component is identical with turning right;Dynamic support component of turning left includes bearing block, taper roll bearing, float grease seal seat and blind flange Plate, the taper roll bearing include taper roller outer ring and taper roller inner ring;The taper roll bearing of both sides is pacified face-to-face Dress, and respectively in the bearing block of both sides, the outside of the bearing block of both sides is separately installed with flange plate by screw, floats Oil seal seat is between taper roller inner ring and bearing block;Each dust seal is mounted between bearing block side and cutter hub Circle, reverse metal float grease seal is mounted between each bearing block opposite side and cutter hub;Reverse metal float grease seal includes two Individual symmetrical becket, two sealing die cavities, each closed type intracavitary are equipped with O-ring seal, one of becket and close Envelope die cavity is located on float grease seal seat, and another becket and sealing die cavity are located on bearing block, on the inside of two beckets Bottom is affixed, and forms a seal interface.
2. novel shield hobboing cutter as claimed in claim 1, it is characterised in that it is airtight cavity inside described bearing block, axle Lubricating oil is filled with bearing.
3. novel shield hobboing cutter as claimed in claim 1 or 2, it is characterised in that described cutter ring interference hot charging is in cutter hub On cylindrical.
4. novel shield hobboing cutter as claimed in claim 3, it is characterised in that be provided with back-up ring between the cutter ring and cutter hub.
5. novel shield hobboing cutter as claimed in claim 4, it is characterised in that the taper roller inner ring positions lock by band Tight ring is arranged on the spindle nose of cutter hub, and the taper roller outer ring is arranged in bearing block, taper roller inner ring and taper roller Outer ring forms revolute pair.
6. novel shield hobboing cutter as claimed in claim 5, it is characterised in that set between the float grease seal seat and cutter hub spindle nose It is equipped with O-ring seal one.
7. novel shield hobboing cutter as claimed in claim 6, it is characterised in that be provided with the step of the flange plate is cylindrical O-ring seal two.
CN201711008998.XA 2017-10-25 2017-10-25 A kind of novel shield hobboing cutter Active CN107740695B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711008998.XA CN107740695B (en) 2017-10-25 2017-10-25 A kind of novel shield hobboing cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711008998.XA CN107740695B (en) 2017-10-25 2017-10-25 A kind of novel shield hobboing cutter

Publications (2)

Publication Number Publication Date
CN107740695A true CN107740695A (en) 2018-02-27
CN107740695B CN107740695B (en) 2019-04-02

Family

ID=61238384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711008998.XA Active CN107740695B (en) 2017-10-25 2017-10-25 A kind of novel shield hobboing cutter

Country Status (1)

Country Link
CN (1) CN107740695B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219989A (en) * 2019-07-15 2019-09-10 湖北金稽山机械科技有限公司 A kind of floating seal pair
CN110374615A (en) * 2019-07-23 2019-10-25 中建三局集团有限公司 A kind of combination cutter ring Hob for cutting rock for Suporting structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010540805A (en) * 2007-09-25 2010-12-24 キャタピラー インコーポレイテッド Rotating cutter for tunnel boring machine
CN202882933U (en) * 2012-11-02 2013-04-17 张洪明 Novel shield tunneling machine hobbing cutter
CN204140083U (en) * 2014-10-16 2015-02-04 山东天工岩土工程设备有限公司 A kind of core pack arrangement hobboing cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010540805A (en) * 2007-09-25 2010-12-24 キャタピラー インコーポレイテッド Rotating cutter for tunnel boring machine
CN202882933U (en) * 2012-11-02 2013-04-17 张洪明 Novel shield tunneling machine hobbing cutter
CN204140083U (en) * 2014-10-16 2015-02-04 山东天工岩土工程设备有限公司 A kind of core pack arrangement hobboing cutter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219989A (en) * 2019-07-15 2019-09-10 湖北金稽山机械科技有限公司 A kind of floating seal pair
CN110219989B (en) * 2019-07-15 2024-07-23 湖北金稽山机械科技有限公司 Floating sealing pair
CN110374615A (en) * 2019-07-23 2019-10-25 中建三局集团有限公司 A kind of combination cutter ring Hob for cutting rock for Suporting structure

Also Published As

Publication number Publication date
CN107740695B (en) 2019-04-02

Similar Documents

Publication Publication Date Title
CN202082265U (en) Sealed oil lubrication drive shaft assembly
CN201943607U (en) Remote-control diameter-variable centralizer for well drilling
CN103233682B (en) The rock bit lubricating system of Micro-positive pressure auto-compensation
CN107740695A (en) A kind of novel shield hobboing cutter
CN102878274A (en) Rotary drilling rig and sealing device of power head case of rotary drilling rig
CN203729896U (en) Trihedral drill rod for advanced water exploitation
CN105134083B (en) A kind of high speed rock bit bearing spiral combined sealing structure
CN206530292U (en) A kind of spinning water jet Counterboring apparatus
CN111322081A (en) Novel TBM shield hobbing cutter device
CN103352658A (en) Tricone bit
CN105604486A (en) Bionic earthworm type composite sealing structure of roller cone bit
CN202483582U (en) Novel shield hobbing cutter
CN109723375A (en) A kind of fluid power suspension turbine section
CN214305139U (en) Pinion assembly
CN212202057U (en) Novel TBM shield hobbing cutter device
CN201202399Y (en) Main shaft of top drive drilling device
CN213683936U (en) Drilling machine double-rotation trolley with floating sealing gas path joint
CN220668372U (en) Main bearing sealing assembly of heading machine
CN2934549Y (en) Bearing sealing structure for roller drill bit
CN216009552U (en) Power head sealing structure of double-wheel stirring drilling machine
CN216305827U (en) Mill wheel expanding drilling device
CN114576264A (en) Ball lock tight bearing structure courtyard hobbing cutter
CN202300196U (en) Power head into which water and gas enter in radial direction
CN220434653U (en) Hobbing cutter drill bit with metal sealing structure
CN219974411U (en) Reverse well hob with axial thrust

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant