CN105675057B - The bearing monitoring device of sensor integration formula - Google Patents
The bearing monitoring device of sensor integration formula Download PDFInfo
- Publication number
- CN105675057B CN105675057B CN201610104144.0A CN201610104144A CN105675057B CN 105675057 B CN105675057 B CN 105675057B CN 201610104144 A CN201610104144 A CN 201610104144A CN 105675057 B CN105675057 B CN 105675057B
- Authority
- CN
- China
- Prior art keywords
- ring
- rotor
- bearing
- contact
- insulating body
- 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.)
- Active
Links
Classifications
-
- 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
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
-
- 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
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
Abstract
The invention discloses a kind of bearing monitoring device of sensor integration formula, including bearing, bearing includes rotor and stator, sealing ring is mounted at the both ends of bearing, sealing ring is between rotor and stator, acceleration transducer is fixed with wherein one end end face of rotor, fixed in rotor on the end face of acceleration transducer and be further fixed on insulating body ring, the annular groove of at least three and rotor coaxial are provided with side of the insulating body ring away from rotor, contact ring is equipped with each annular groove, each contact ring is electrically connected by wire with acceleration transducer respectively；It is provided with the sealing ring close to acceleration transducer at least with contacting the one-to-one contact brush of ring, the brush of the contact brush is ridden on corresponding contact ring, and wire is respectively connected with each contact brush.Vibration and the rotary speed information of bearing rotor are so monitored by acceleration transducer, makes that the acquisition of bearing fault information is more accurate, arrangement is compacter, sensor usage quantity is less.
Description
Technical field
The invention belongs to bearing monitoring technical field, specifically, the bearing prison of more particularly to a kind of sensor integration formula
Survey device.
Background technology
At present, bearing is widely used in the energy, metallurgical, and Aero-Space are with being the most frequently used in mechanized equipment in war industry
One of part, and easily worn part.Because bearing bears very big load in operation process, condition of work is severe, and it occurs
The probability of failure is also big.According to statistics, in the failure of rotating machinery, the failure of bearing damage accounts for 30%.And bearing fault is light then
System effectiveness is reduced, causes shutdown, it is heavy then produce accident, cause heavy economic losses and casualties.Sensor integration formula
Bearing monitoring device can not destroy bearing body structure, also not monitor axle under conditions of Bearing outer installs additional assemblies
The real-time status held, the initial failure early warning of bearing is realized, is had great practical value.
Existing sensor integration formula bearing monitoring device is more to be arranged in bearing stator part by acceleration transducer, is used for
Measure the vibration information of bearing；And the monitoring of rotating speed is then realized using the mode of magnetoelectricity or photoelectricity.The vibration information so monitored
From bearing outer ring, there is certain distance distance fault source position, it is impossible to the fault message of reflection bearing comprehensively.Also, vibrate
From tachometric survey using different sensors, it is necessary to install extra magnetic pole or grating encoder, functional part arrangement is scattered, design
Not compact enough, integrated level is low.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of bearing monitoring device of sensor integration formula, for subtracting
Few number of sensors, improves malfunction monitoring efficiency.
Technical scheme is as follows：A kind of bearing monitoring device of sensor integration formula, including bearing, the bearing
Including rotor and stator, sealing ring is mounted at the both ends of the bearing, the sealing ring between rotor and stator,
Wherein one end end face of the rotor is fixed with acceleration transducer, is fixed in the rotor on the end face of acceleration transducer also
Insulating body ring is fixed with, the annular groove of at least three and rotor coaxial are provided with the side of the insulating body ring away from rotor,
Contact ring is equipped with each annular groove, each contact ring is electrically connected by wire with acceleration transducer respectively；
It is provided with least on the sealing ring close to the acceleration transducer with contacting the one-to-one contact brush of ring, the contact brush
Brush ride over corresponding to contact ring on, be respectively connected with wire on each contact brush.
The present invention in the end face of bearing rotor by fixing acceleration transducer and insulating body ring, on insulating body ring
Contact ring is set, and contact brush is installed on the sealing ring between rotor and stator, it is right by contact brush and the connection for contacting ring
Acceleration transducer is powered and by the signal output of acceleration transducer, is turned so as to directly monitor bearing using acceleration transducer
The vibration information of son, acquisition of information is reliable, bang path is short, makes the acquisition of bearing fault information more accurate；Also, acceleration
Sensor is located on rotor, can obtain the rotary speed information of bearing simultaneously, avoids installing extra magnetic pole or grating encoder, function
Part characteristics of compact layout, integrated level are high, and sensor usage quantity is few, and cost is lower.
Preferably, mounting groove, the acceleration transducer position are provided with the side of insulating body ring towards the rotor
In in the mounting groove, and the acceleration transducer is close to the end face arrangement of rotor, the insulating body ring and rotor it
Between be connected with screw, acceleration transducer and insulating body ring are fixed together by the screw with rotor.So pass through screw
Insulating body ring is fixed with rotor, and mounting groove installation acceleration transducer is opened up on insulating body ring, so as to utilize
Insulating body ring and acceleration transducer are fixed together by screw with rotor simultaneously, make insulating body ring and acceleration transducer
Fixed structure between rotor is simple, it is compact, reliable, be easy to assembly and disassembly.
The contact brush is arranged on corresponding sealing ring by installing plate, and one end and the sealing ring of the installing plate are consolidated
Fixed, the contact brush is fixed on the other end of installing plate.Mounting structure of the contact brush on sealing ring is simple and convenient to operate.
As it is another preferably, be provided with mounting groove, the acceleration sensing in the side of insulating body ring towards the rotor
Device is located in the mounting groove, is corresponded in the rotor and step surface is machined with the end face of acceleration transducer, the insulating body
Ring is interference fitted on the step surface of rotor, and acceleration transducer is close to step surface arrangement.So pass through insulating body
Ring is interference fitted on the step surface of rotor, insulating body ring is fixed with rotor, and installation is opened up on insulating body ring
Groove installs acceleration transducer, so as to acceleration transducer and rotor be fixed together simultaneously, makes insulating body ring and acceleration
The fixed structure spent between sensor and rotor is simple, compact, reliable.
The contact brush is arranged on corresponding sealing ring by installing plate, one end and the sealing ring one of the installing plate
Connection, the contact brush are fixed on the other end of installing plate.The mounting structure of contact brush is simple.
The sealing ring includes outer shroud, connection ring and the inner ring with coaxial bearing, and the outer shroud and inner ring are cylindrical in shape,
And the outer wall of outer shroud is close to the inwall of stator, the inwall of inner ring is close to the outer wall of rotor, the connection ring be connected to outer shroud with
Between the outer end of inner ring.The structure of sealing ring is simple.
Preferably, the annular groove on the insulating body ring has three, the contact ring also has three, with each contact ring
Corresponding contact brush has been arranged symmetrically two.
Preferably the annular groove on the insulating body ring has four as another, and the contact ring also has four, is connect with each
Contact brush corresponding to touching ring has one.
Beneficial effect：The present invention in the end face of bearing rotor by fixing acceleration transducer and insulating body ring, exhausted
Contact ring, and contact brush of the installation with contacting ring contact on the sealing ring between rotor and stator are set in edge substrate ring, from
And vibration and the rotary speed information of bearing rotor are directly monitored, make that the acquisition of bearing fault information is more accurate, functional part arrangement
It is compacter, sensor usage quantity is less.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is Fig. 1 I portions enlarged drawing.
Fig. 3 is Fig. 1 right view.
Fig. 4 is the structural representation of embodiment two.
Fig. 5 is Fig. 4 J portions enlarged drawing.
Marked in figure as follows：Bearing 1, stator 1a, rotor 1b, sealing ring 2, outer shroud 2a, connection ring 2b, inner ring 2c, screw
3rd, installing plate 4, acceleration transducer 5, insulating body ring 6, contact ring 7, contact brush 8 and wire 9.
Embodiment
It is exemplary to describe embodiment below with reference to accompanying drawing, it is intended to the present invention is explained, and it is not intended that to this
The limitation of invention.Embodiments of the invention are described below in detail, described embodiment example is shown in the drawings, wherein from beginning extremely
Same or similar element is represented with same or similar label eventually or there is the element of same or like function.The present invention's
, it is necessary to illustrate in description, for the noun of locality, if any term " " center ", " transverse direction ", " longitudinal direction ", " length ", " width ", " thickness
Degree ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " clockwise ",
Indicating positions such as " counterclockwise " and position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of narration originally
Invent and simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with particular orientation
Construction and operation, the specific protection domain that should not be construed as limiting the invention.
In the present invention, except as otherwise clear stipulaties and restriction, if any term " assembling ", " connected ", " connection ", " fixation " etc.
Term should be gone to understand as broad sense, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can also
It is mechanical connection or electrical connection；Can be joined directly together or be connected by intermediary, can be two
Element internal is connected.For those of ordinary skills, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
Below in conjunction with the accompanying drawings, by being further described to the embodiment of the present invention, the technology of the present invention is made
Scheme and its advantage are clearer, clear and definite.
Embodiment one：
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes bearing 1, and the bearing 1 includes rotor 1b and stator 1a, described
The both ends of bearing 1 are mounted on sealing ring 2.Between rotor 1b and stator 1a, the sealing ring 2 includes the sealing ring 2
Coaxial outer shroud 2a, connection ring 2b and inner ring 2c with bearing 1.The outer shroud 2a and inner ring 2c are cylindrical in shape, and outer shroud 2a
Outer wall be close to stator 1a inwall, inner ring 2c inwall is close to rotor 1b outer wall, the connection ring 2b integrally connecteds are outside
Between ring 2a and inner ring 2c outer end.
As shown in Figure 1, Figure 2 and Figure 3, acceleration transducer 5 is fixed with wherein one end end face of the rotor 1b, in institute
State and be further fixed on insulating body ring 6 on the end face of rotor 1b fixation acceleration transducers 5.The insulating body ring 6 away from turn
Sub- 1b side is provided with least three annular grooves coaxial with rotor 1b, and contact ring 7, Mei Yisuo is equipped with each annular groove
Contact ring 7 is stated to electrically connect with acceleration transducer 5 by wire 9 respectively.In the sealing ring 2 close to the acceleration transducer 5
On be provided with least with contacting the one-to-one contact brush 8 of ring 7, the brush of the contact brush 8 ride over corresponding on contact ring 7,
Wire 9 is respectively connected with each contact brush 8.Annular groove on the preferably described insulating body ring 6 of the present embodiment has three, institute
Stating contact ring 7 also has three, contacts contact brush 8 corresponding to ring 7 with each and has been arranged symmetrically two.Certainly, the insulation base
Annular groove on body ring 6 can also have four, five or more, the contact ring 7 can also be correspondingly arranged on four, five or
Person is more, contacts contact brush 8 corresponding to ring 7 with each and can only be provided with one.
As shown in Figure 1, Figure 2 and Figure 3, mounting groove is provided with the side of insulating body ring 6 towards the rotor 1b, it is described to add
Velocity sensor 5 is located in the mounting groove, and the acceleration transducer 5 is close to rotor 1b end face arrangement, described exhausted
It is connected with screw 3 between edge substrate ring 6 and rotor 1b, the screw 3 is by acceleration transducer 5 and insulating body ring 6 and rotor
1b is fixed together.The contact brush 8 is arranged on corresponding sealing ring 2 by installing plate 4, one end of the installing plate 4 with
Sealing ring 2 is fixed, and the end of installing plate 4 is overlapped on the connection ring 2b of corresponding sealing ring 2 outer wall, and is consolidated by trip bolt
It is fixed.The contact brush 8 is fixed on the other end of installing plate 4.
Embodiment two：
As shown in Figure 4 and Figure 5, mounting groove, the acceleration are provided with the side of insulating body ring 6 towards the rotor 1b
Sensor 5 is located in the mounting groove.Corresponded in the rotor 1b and be machined with step surface on the end face of acceleration transducer 5, it is described
Insulating body ring 6 is interference fitted on rotor 1b step surface, and acceleration transducer 5 is close to step surface arrangement.It is described
Contact brush 8 is arranged on corresponding sealing ring 2 by installing plate 4, the connection of one end of the installing plate 4 and corresponding sealing ring 2
Ring 2b integrally connecteds, the contact brush 8 are fixed on the other end of installing plate 4.The other structures of the present embodiment and embodiment one
It is identical, it will not be described here.
Claims (8)
1. a kind of bearing monitoring device of sensor integration formula, including bearing, the bearing includes rotor and stator, in the axle
The both ends held are mounted on sealing ring, and the sealing ring is between rotor and stator, it is characterised in that：In its of the rotor
Middle one end end face is fixed with acceleration transducer, is fixed in the rotor on the end face of acceleration transducer and is further fixed on the base that insulate
Body ring, the annular groove of at least three and rotor coaxial are provided with the side of the insulating body ring away from rotor, in each ring
Contact ring is equipped with groove, each contact ring is electrically connected by wire with acceleration transducer respectively；Add close to described
It is provided with the sealing ring of velocity sensor at least with contacting the one-to-one contact brush of ring, the brush of the contact brush rides over pair
On the contact ring answered, wire is respectively connected with each contact brush.
2. the bearing monitoring device of sensor integration formula according to claim 1, it is characterised in that：In the insulating body ring
Mounting groove is provided with towards the side of rotor, the acceleration transducer is located in the mounting groove, and the acceleration transducer
It is close to the end face arrangement of rotor, is connected with screw between the insulating body ring and rotor, the screw is by acceleration sensing
Device and insulating body ring are fixed together with rotor.
3. the bearing monitoring device of sensor integration formula according to claim 2, it is characterised in that：The contact brush passes through peace
Loading board is arranged on corresponding sealing ring, and one end and the sealing ring of the installing plate are fixed, and the contact brush is fixed on installing plate
The other end on.
4. the bearing monitoring device of sensor integration formula according to claim 1, it is characterised in that：In the insulating body ring
Mounting groove is provided with towards the side of rotor, the acceleration transducer is located in the mounting groove, and acceleration is corresponded in the rotor
Step surface is machined with the end face of sensor, the insulating body ring is interference fitted on the step surface of rotor, and makes acceleration
Sensor is close to step surface arrangement.
5. the bearing monitoring device of sensor integration formula according to claim 4, it is characterised in that：The contact brush passes through peace
Loading board is arranged on corresponding sealing ring, and one end and the sealing ring integrally connected of the installing plate, the contact brush are fixed on peace
On the other end of loading board.
6. according to the bearing monitoring device of the 1 or 2 or 3 or 4 or 5 sensor integration formula of claim, it is characterised in that：It is described
Sealing ring includes outer shroud, connection ring and the inner ring with coaxial bearing, and the outer shroud and inner ring are cylindrical in shape, and outer shroud is outer
Wall is close to the inwall of stator, the inwall of inner ring is close to the outer wall of rotor, the connection ring be connected to outer shroud and inner ring outer end it
Between.
7. the bearing monitoring device of sensor integration formula according to claim 6, it is characterised in that：On the insulating body ring
Annular groove have three, the contact ring also has three, contacts contact brush corresponding to ring with each and has been arranged symmetrically two.
8. the bearing monitoring device of sensor integration formula according to claim 6, it is characterised in that：On the insulating body ring
Annular groove have four, the contact ring also has four, contacts contact brush corresponding to ring with each and has one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104144.0A CN105675057B (en) | 2016-02-25 | 2016-02-25 | The bearing monitoring device of sensor integration formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104144.0A CN105675057B (en) | 2016-02-25 | 2016-02-25 | The bearing monitoring device of sensor integration formula |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105675057A CN105675057A (en) | 2016-06-15 |
| CN105675057B true CN105675057B (en) | 2017-11-17 |
Family
ID=56305549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610104144.0A Active CN105675057B (en) | 2016-02-25 | 2016-02-25 | The bearing monitoring device of sensor integration formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105675057B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201322045Y (en) * | 2008-09-19 | 2009-10-07 | 重庆长江轴承股份有限公司 | Intelligent automobile hub bearing capable of self-diagnosis |
| CN204241212U (en) * | 2014-09-26 | 2015-04-01 | 河南科技大学 | A kind of CT machine turntable bearing experimental machine test macro |
| CN105067106A (en) * | 2015-07-09 | 2015-11-18 | 大连理工大学 | Vibration signal acquisition method for intershaft bearing |
| CN204788949U (en) * | 2015-07-09 | 2015-11-18 | 中国航空工业集团公司上海航空测控技术研究所 | Engine bearing trouble -locating appearance |
| CN205121880U (en) * | 2015-10-27 | 2016-03-30 | 深圳市泰纳电子科技开发有限公司 | Trinity intelligence switch |
| CN205483060U (en) * | 2016-02-25 | 2016-08-17 | 重庆大学 | Sensor integrated form bearing monitoring devices |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002131188A (en) * | 2000-10-20 | 2002-05-09 | Sankyo Seiki Mfg Co Ltd | Motor bearing monitor and storage device |
| WO2014154257A1 (en) * | 2013-03-27 | 2014-10-02 | Aktiebolaget Skf | Bearing device including a clamping ring with embedded sensor |
-
2016
- 2016-02-25 CN CN201610104144.0A patent/CN105675057B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201322045Y (en) * | 2008-09-19 | 2009-10-07 | 重庆长江轴承股份有限公司 | Intelligent automobile hub bearing capable of self-diagnosis |
| CN204241212U (en) * | 2014-09-26 | 2015-04-01 | 河南科技大学 | A kind of CT machine turntable bearing experimental machine test macro |
| CN105067106A (en) * | 2015-07-09 | 2015-11-18 | 大连理工大学 | Vibration signal acquisition method for intershaft bearing |
| CN204788949U (en) * | 2015-07-09 | 2015-11-18 | 中国航空工业集团公司上海航空测控技术研究所 | Engine bearing trouble -locating appearance |
| CN205121880U (en) * | 2015-10-27 | 2016-03-30 | 深圳市泰纳电子科技开发有限公司 | Trinity intelligence switch |
| CN205483060U (en) * | 2016-02-25 | 2016-08-17 | 重庆大学 | Sensor integrated form bearing monitoring devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105675057A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109607094B (en) | Intelligent belt conveyor idler structure | |
| CN100547254C (en) | The intelligent bearing of band composite sensor | |
| KR20150005929A (en) | Bearing embedded power generating configuration | |
| JP5986686B2 (en) | Wheel speed sensor | |
| JPH10218340A (en) | Abnormality detecting device for conveyor roller | |
| CN104040150A (en) | Improved throttle body assembly | |
| CN103884859A (en) | Magnetoelectric velocity transducer with self-checking function | |
| KR20160135445A (en) | Energy harvester | |
| CN103208880B (en) | Magnetic suspension flywheel energy storage device and fault diagnosis method thereof | |
| KR20120010695A (en) | Torque index sensor having structure for magnetic shielding | |
| CN105675057B (en) | The bearing monitoring device of sensor integration formula | |
| US8129979B2 (en) | Arrangement for lightning detection at a wind turbine | |
| CN201805188U (en) | Novel wiring groove for locomotive | |
| CN205483060U (en) | Sensor integrated form bearing monitoring devices | |
| CN201351621Y (en) | Axial-flow fan with vibration measuring device | |
| CN102818520B (en) | Non-contact type angle displacement sensor | |
| CN105605109B (en) | The sensor integration sliding ring type bearing arrangement of angular domain vibration signal can be obtained | |
| CN205478960U (en) | Integrated sliding ring formula bearing arrangement of sensor | |
| CN100410620C (en) | On-line mornitoring device for magnetic pump hearing gap | |
| JP6867220B2 (en) | Sensor unit | |
| JP2012246888A (en) | Oil reservoir device | |
| EP3892424B1 (en) | Motor and industrial robot | |
| JP2008261718A (en) | Proximity sensor with self-diagnostic function | |
| CN209367171U (en) | A kind of intelligent belt conveyer carrying roller structure | |
| CN207752029U (en) | A kind of automotive speed sensor with temperature sense |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |