CN110925310B - TBM thoughtlessly moves base bearing structure - Google Patents
TBM thoughtlessly moves base bearing structure Download PDFInfo
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- CN110925310B CN110925310B CN201911324187.XA CN201911324187A CN110925310B CN 110925310 B CN110925310 B CN 110925310B CN 201911324187 A CN201911324187 A CN 201911324187A CN 110925310 B CN110925310 B CN 110925310B
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- rotor
- radial
- stator
- tbm
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
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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
- F16C19/56—Systems consisting of a plurality of bearings with rolling friction in which the rolling bodies of one bearing differ in diameter from those of another
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
- F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6674—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to the amount supplied, e.g. gaps to restrict flow of the liquid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Turning (AREA)
Abstract
The invention provides a TBM hybrid main bearing structure which comprises a stator, wherein a fluid lubricating piece and a rolling body are arranged between the stator and a rotor, and a gap is formed between the fluid lubricating piece and the rotor. The invention has the beneficial effects that: the hydrostatic bearings and the rolling body bearings are uniformly distributed in a staggered mode, the hydrostatic bearings are taken as main bearing bearings, the roller bearings are taken as auxiliary bearing, and auxiliary support is provided. The device has the advantages of stable operation, long service life and high bearing capacity. The requirements of the service life and the heavy bearing capacity of the TBM main bearing by the ultra-long tunnel and the extremely hard rock formation can be met.
Description
Technical Field
The invention relates to a bearing, in particular to a TBM hybrid main bearing structure.
Background
The main bearing is a core component of a full-face Tunnel Boring Machine (TBM), supports the cutter head and provides torque and thrust for the cutter head excavation operation. The conventional TBM main bearing adopts a three-row roller bearing (main thrust, auxiliary thrust and radial) structure, an outer ring of the bearing is a stator and is connected with a headstock, an inner ring of the bearing is a rotor and is connected with a cutter head, and the thrust and the torque of the cutter head are transmitted through rigid friction of rollers.
The bearing capacity and the service life of the conventional TBM main bearing are limited by the mass and the size of the roller, the longer the tunneling mileage is, the higher the rock strength is, and the larger the size of the roller needs to be designed so as to meet the requirements of bearing and service life. For geological working conditions of ultra-long tunnels and extremely hard rocks, the conventional TBM main bearing has certain limitation, and the service life of the conventional TBM main bearing cannot meet the use requirement.
Disclosure of Invention
The invention provides a TBM hybrid main bearing structure, which solves the problem that the service life of the conventional main bearing cannot meet the use requirement.
The technical scheme of the invention is realized as follows: a TBM hybrid main bearing structure comprises a stator, wherein a fluid lubricating piece and a rolling body are arranged between the stator and a rotor, and a gap is formed between the fluid lubricating piece and the rotor.
And a fluid lubricating piece and a rolling body are arranged in the axial direction, the radial direction or the axial direction and the radial direction between the stator and the rotor.
The fluid lubricating piece is an oil pad or an air pad.
The rolling body is a roller or a rolling ball.
The fluid lubricator and the rolling bodies are arranged in a staggered mode.
The stator include axial ascending main push surface and radial ascending radial surface, be equipped with the main oil pad that pushes away on the main push surface, the main clearance that forms between oil pad and the rotor that pushes away is equipped with the main roller that pushes away between main push surface and the rotor, be equipped with radial oil pad on the radial surface, form the clearance between radial oil pad and the rotor, be equipped with radial roller between radial surface and the rotor.
The stator comprises an axial auxiliary pushing surface, an auxiliary pushing roller is arranged between the auxiliary pushing surface and the rotor and is in contact with an adjusting pad on the rotor, an elastic element is arranged between the adjusting pad and the rotor, and an adjusting screw hole located at the rear part of the spring element is arranged on the rotor.
The elastic element is a disc spring.
The stator and the rotor are both annular.
The stator is connected with the frame, and the rotor is connected with the cutter head.
The rotor include rotor I and rotor II, rotor I and rotor II releasable connection, rotor I pushes away the face cooperation with the owner of stator, rotor II and the radial face of stator, assist and push away the face cooperation.
The oil pad is provided with a restrictor, and pressure oil is supplied to the oil pad through the restrictor.
The invention has the beneficial effects that: the hydrostatic bearings and the rolling body bearings are uniformly distributed in a staggered mode, the hydrostatic bearings are taken as main bearing bearings, the roller bearings are taken as auxiliary bearing, and auxiliary support is provided. The device has the advantages of stable operation, long service life and high bearing capacity. The requirements of the service life and the heavy bearing capacity of the TBM main bearing by the ultra-long tunnel and the extremely hard rock formation can be met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is an axial sectional view of fig. 1.
Fig. 3 is a radial sectional view of the stator main thrust face hydrostatic bearing.
Fig. 4 is a radial cross-sectional view of a stator radial face hydrostatic bearing.
Fig. 5 is a schematic view of the stator structure of the present invention.
In the figure: 1-stator, 2-main oil pushing pad, 3-main oil pushing roller, 4-radial roller, 5-retainer I, 6-retainer II, 7-radial oil pad, 8-rotor I, 9-rotor II, 10-restrictor, 11-auxiliary oil pushing roller, 12-adjusting pad and 13-disc spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in fig. 1 to 4, a TBM hybrid main bearing structure includes a stator 1 and a rotor. The axial, radial or axial and radial positions between the stator 1 and the rotor are provided with fluid lubricants and rolling bodies, and the positions of the sliding fit can be selected according to requirements so as to resist different axial or radial forces. A gap is formed between the fluid lubrication piece and the rotor, and the fluid lubrication piece can form a lubricating film layer in the gap to realize sliding fit between the stator and the rotor. The fluid lubrication pieces and the rolling bodies are arranged in a staggered mode, and the sliding stress is guaranteed to be uniform. The fluid lubrication piece is an oil pad or an air pad and plays a main pressure bearing role. The rolling bodies are rollers or rolling balls and play a role in assisting pressure bearing. Under the working state, the outside supplies oil to the oil cushion or supplies air to the air cushion, and fluid forms a pressure-bearing oil film or an air film between gaps to realize sliding. The rolling body provides auxiliary support when the static pressure bearing works in a non-working state, and can provide temporary support when the static pressure bearing disappears instantly due to sudden fluid supply interruption.
Example 2
As shown in fig. 1 to 5, a TBM hybrid main bearing structure includes a stator 1 and a rotor, where the stator 1 includes a main thrust surface in an axial direction, an auxiliary thrust surface, and a radial surface in a radial direction. The rotor comprises a rotor I8 and a rotor II9, and the rotor I8 is detachably connected with the rotor II 9. Two rows of thrust bearings and one row of radial bearings are arranged between the stator and the rotor. The stator 1 and the rotor are both annular, the stator is connected with the rack through bolts, and the rotor is connected with the cutter head through bolts, so that the stator and the rotor are installed on the tunnel boring machine.
The main oil pushing bearing is formed by annularly and crosswise arranging a main oil pushing pad 2 and a main oil pushing roller 3 on the stator 1, the main oil pushing pad 2 and the main oil pushing roller share a track surface on the rotor I8, and a gap S1 is formed between the main oil pushing pad 2 and the rotor I8, so that a pressure-bearing oil film is formed conveniently.
The radial bearing is formed by arranging radial oil pads 7 and radial rollers 4 on a stator in a crossed mode along the same reference circle, the radial oil pads 7 and the radial rollers 4 share a track surface on the rotor II9, and a gap S2 is formed between the radial oil pads 7 and the rotor II9, so that a pressure-bearing oil film can be formed conveniently.
The main oil pushing pad 2 and the radial oil pushing pad 7 are formed by processing on the stator 1, a sink groove is formed in the middle, a throttler 10 is installed at the bottom, and pressure oil P fed from the outside forms a pressure-bearing oil film between the main oil pushing pad 2, the radial oil pushing pad 7 and a rail surface under the damping action of the throttler to realize sliding lubrication.
The main thrust rollers 3 and the radial rollers 4 are arranged in groups, and the shape of the main thrust rollers and the radial rollers in the main bearing is fixed by a cage I5 and a cage II 6. The roller bearing consisting of the main push roller 3 and the radial roller 4 can work under the non-working state of the cutter head, provides auxiliary support for the cutter head, and can provide temporary support for the cutter head when the hydrostatic bearing disappears instantly due to the sudden supply interruption of hydraulic oil.
An auxiliary pushing roller 11 is arranged between the auxiliary pushing surface and the rotor, the auxiliary pushing roller 11 is in contact with an adjusting pad 12 on the rotor II9, an elastic element is arranged between the adjusting pad 12 and the rotor II9, the elastic element is a disc spring 13, and an adjusting screw hole positioned at the rear part of the spring element is arranged on the rotor II 9. Through adjusting the adjusting bolt in the screw hole, can utilize the adjusting pad to do and assist and push away the roller, assist and push away the roller and reapply on the stator to can change the clearance between stator and the rotor I. The clearance between increase stator and the rotor I can guarantee that the main bearing that pushes away only pushes away the oil blanket work, and the main roller that pushes away has reduced the friction with stator, rotor I because the clearance increases, has reduced the wearing and tearing that the main roller that pushes away to the life who pushes away the roller has improved the main.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a TBM thoughtlessly moves main bearing structure, includes stator (1), its characterized in that: stator (1) and rotor between be equipped with fluid emollient piece and rolling element, fluid emollient piece is oil pad or air cushion, the rolling element is roller or spin, stator (1) including axial ascending main push surface and radial ascending radial surface, be equipped with on the main push surface and push away oil pad (2) or main air cushion that pushes away as fluid emollient piece, main push away between oil pad (2) and the rotor or main air cushion and the rotor between form the clearance, be equipped with between main push surface and the rotor and push away roller (3), be equipped with radial oil pad (7) or radial air cushion as fluid emollient piece on the radial surface, form the clearance between radial oil pad (7) and the rotor or between radial air cushion and the rotor, be equipped with radial roller (4) or radial spin as the rolling element between radial surface and the rotor.
2. The TBM hybrid main bearing structure of claim 1, wherein: and rolling bodies are arranged between the stator (1) and the rotor in the axial direction or in the axial direction and the radial direction.
3. The TBM hybrid main bearing structure of claim 1 or 2, wherein: the fluid lubricator and the rolling bodies are arranged in a staggered mode.
4. The TBM hybrid main bearing structure of claim 1, wherein: the stator (1) comprises an axial auxiliary pushing surface, an auxiliary pushing roller (11) is arranged between the auxiliary pushing surface and the rotor, the auxiliary pushing roller (11) is in contact with an adjusting pad (12) on the rotor, an elastic element is arranged between the adjusting pad (12) and the rotor, and an adjusting screw hole located at the rear part of the spring element is formed in the rotor.
5. The TBM hybrid main bearing structure according to claim 1 or 4, wherein: the stator (1) is connected with the frame, and the rotor is connected with the cutter head.
6. The TBM hybrid main bearing structure according to claim 1 or 4, wherein: the rotor include rotor I (8) and rotor II (9), rotor I (8) and rotor II (9) releasable connection, rotor I (8) push away the face cooperation with the owner of stator (1), rotor II (9) with the stator (1) radial surface, assist and push away the face cooperation.
7. The TBM hybrid main bearing structure of claim 1, wherein: the oil pad is provided with a restrictor (10), and the pressure oil is supplied to the oil pad through the restrictor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324187.XA CN110925310B (en) | 2019-12-20 | 2019-12-20 | TBM thoughtlessly moves base bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324187.XA CN110925310B (en) | 2019-12-20 | 2019-12-20 | TBM thoughtlessly moves base bearing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110925310A CN110925310A (en) | 2020-03-27 |
| CN110925310B true CN110925310B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911324187.XA Active CN110925310B (en) | 2019-12-20 | 2019-12-20 | TBM thoughtlessly moves base bearing structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163887A (en) * | 2010-02-22 | 2011-08-24 | 何君 | Static pressure lifting and rolling ring bearing hybrid support for high-speed motor, and rotary machine |
| KR20130071164A (en) * | 2011-12-20 | 2013-06-28 | 삼성전기주식회사 | Hydrodynamic bearing assembly and motor including the same |
| CN203730559U (en) * | 2014-02-19 | 2014-07-23 | 日本精工株式会社 | Aerostatic bearing |
| CN104533940A (en) * | 2014-09-05 | 2015-04-22 | 天津大学 | TBM mainshaft bearing with self-adaptive compensation function |
| CN108105259A (en) * | 2017-12-22 | 2018-06-01 | 上海理工大学 | A kind of dynamic and static pressure cone bearing shafting and precision machine tool |
| CN110529133A (en) * | 2019-10-08 | 2019-12-03 | 西南交通大学 | A kind of TBM disk cutter of cutter ring excircle fluting |
-
2019
- 2019-12-20 CN CN201911324187.XA patent/CN110925310B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163887A (en) * | 2010-02-22 | 2011-08-24 | 何君 | Static pressure lifting and rolling ring bearing hybrid support for high-speed motor, and rotary machine |
| KR20130071164A (en) * | 2011-12-20 | 2013-06-28 | 삼성전기주식회사 | Hydrodynamic bearing assembly and motor including the same |
| CN203730559U (en) * | 2014-02-19 | 2014-07-23 | 日本精工株式会社 | Aerostatic bearing |
| CN104533940A (en) * | 2014-09-05 | 2015-04-22 | 天津大学 | TBM mainshaft bearing with self-adaptive compensation function |
| CN108105259A (en) * | 2017-12-22 | 2018-06-01 | 上海理工大学 | A kind of dynamic and static pressure cone bearing shafting and precision machine tool |
| CN110529133A (en) * | 2019-10-08 | 2019-12-03 | 西南交通大学 | A kind of TBM disk cutter of cutter ring excircle fluting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110925310A (en) | 2020-03-27 |
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