WO2020175417A1 - Procédé de nettoyage de dispositif de support et gabarit d'ensemble de nettoyage - Google Patents

Procédé de nettoyage de dispositif de support et gabarit d'ensemble de nettoyage Download PDF

Info

Publication number
WO2020175417A1
WO2020175417A1 PCT/JP2020/007283 JP2020007283W WO2020175417A1 WO 2020175417 A1 WO2020175417 A1 WO 2020175417A1 JP 2020007283 W JP2020007283 W JP 2020007283W WO 2020175417 A1 WO2020175417 A1 WO 2020175417A1
Authority
WO
WIPO (PCT)
Prior art keywords
internal space
cleaning
seal
shaft
cover
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.)
Ceased
Application number
PCT/JP2020/007283
Other languages
English (en)
Japanese (ja)
Inventor
佑規 新舘
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.)
JTEKT Corp
Original Assignee
JTEKT Corp
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 JTEKT Corp filed Critical JTEKT Corp
Publication of WO2020175417A1 publication Critical patent/WO2020175417A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • 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
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings

Definitions

  • the present disclosure relates to a method for cleaning a bearing device, and a cleaning assembly jig used in the method for cleaning a bearing device.
  • a bearing device that supports a main shaft is provided in a nacelle on a tower, and maintenance of the bearing device is performed in the nacelle.
  • the bearing device In order to clean the internal space, it is necessary to supply the cleaning liquid to the internal space, rotate the bearing device, for example, to perform cleaning, and discharge the used cleaning liquid to the external space of the bearing.
  • As a method of supplying the cleaning liquid to the internal space it is possible to use the existing grease supply hole. However, there may be only one grease supply hole or the hole diameter may be too small. In such a case, the cleaning liquid is not sufficiently supplied and discharged. As a result, effective cleaning is not performed and grease with a high concentration of metal powder remains in the internal space of the bearing device.
  • the present disclosure provides a method for facilitating cleaning of the internal space of a bearing device, and a cleaning assembly jig used in this method. ⁇ 2020/175 417 2 (:171? 2020/007283
  • an inner ring, an outer ring, and a plurality of rolling elements provided in an internal space between the inner ring and the outer ring are configured to support a shaft.
  • An annular seal lid having a seal configured to prevent the leakage of grease in the internal space to the inner space, and a method for cleaning the internal space in a bearing device comprising: Loosen and remove the first fastening member from the fastened part to move the seal lid in the axial direction to separate from the side lid, and to provide a seal member on the circumference of the shaft. After arranging a plurality of divided bodies each having an arc shape in an annular shape together, each of the divided bodies is attached to the side cover by screwing a second fastening member having a hole into each of the fastened portions.
  • the existing set screw of the bearing device is loosened and removed from the female screw, and the annular seal lid is moved in the axial direction to be disengaged from the side lid.
  • a seal member and a plurality of arc-shaped divided bodies are arranged in an annular shape, and the divided bodies are attached to the side lid using hollow screws.
  • the cleaning solution can be supplied to the internal space through the hollow hole of the hollow screw, and the used cleaning solution can be discharged to the external space of the bearing through the hollow hole of the hollow screw, which facilitates cleaning. ..
  • a plurality of the ⁇ 2020/175417 3 (:171? 2020/007283) A part of the total number of the hollow screws to which each divided body is attached is used for supplying the cleaning liquid to the internal space through the hollow hole.
  • the rest of the total number may be used for discharging the cleaning liquid from the internal space through the hollow hole.
  • the above configuration facilitates the recovery of the used cleaning liquid.
  • the cleaning method of the present disclosure is suitable when the rolling bearing is a bearing that supports a main shaft that is installed in a nacelle of a wind power generator and rotates integrally with a blade. .. Wind turbines are generally difficult to maintain because the nacelle is located high above the tower.
  • the cleaning method of the present disclosure facilitates cleaning of the bearing device in the nacelle.
  • an inner ring, an outer ring, and a plurality of rolling elements provided in an inner space between the inner ring and the outer ring are configured to support the shaft.
  • a ring-shaped side cover that is provided on at least one side of the rolling bearing in the axial direction of the rolling bearing so as to cover the internal space and that has a plurality of fastened parts that penetrate toward the internal space.
  • a first fastening member that is screwed into each of the fastened parts, and is attached to the side cover by the first fastening member, and is connected to the outer space of the rolling bearing from between the shaft or the inner ring.
  • An assembly jig for cleaning the inner space of the bearing device including an annular seal lid having a seal configured to prevent leakage of grease in the inner space with a cleaning liquid, has an arc shape.
  • a plurality of divided bodies configured to be provided along the circumference of the shaft, and a ring-shaped cover, and a ring-shaped cover provided on the circumference of the shaft, the cleaning liquid in the internal space.
  • a seal member configured to prevent leakage from between the shaft and the cover, and a second member configured to be screwed into each of the fastened portions to attach the cover to the side cover. Including fastening members.
  • the cleaning assembly jig is used in the cleaning method. That is, the existing set screw of the bearing device is loosened and removed from the female screw, and the annular seal lid is moved in the axial direction to be removed from the side lid. Instead of a seal lid ⁇ 2020/175417 4 (:171? 2020/007283
  • a seal member is provided around the shaft, a plurality of arc-shaped divided bodies are arranged in an annular shape, and the divided bodies are attached to the side lid using hollow screws.
  • the cleaning liquid can be supplied to the internal space through the hollow hole of the hollow screw for cleaning. After cleaning, loosen the hollow screw to remove it from the female screw, remove the seal member and the divided body, move the seal lid in the axial direction to contact the side lid, and attach with the set screw to restore. it can.
  • the cleaning assembly jig described above facilitates cleaning of the internal space.
  • Fig. 1 is a cross-sectional view showing an example of a bearing device to be cleaned.
  • Fig. 2 is a cross-sectional view showing a state in which the cleaning assembly jig is attached to the bearing device.
  • FIG. 3 is a cross-sectional view showing one side in the axial direction of the bearing device.
  • Fig. 4 is a view of the cover in a disassembled state as viewed from the axial direction.
  • FIG. 5 is a cross-sectional view showing a bearing device for explaining a removing step.
  • FIG. 6 is a diagram for explaining another embodiment of the cleaning method.
  • FIG. 1 is a cross-sectional view showing an example of a bearing device to be cleaned.
  • the bearing device 10 is a device that rotatably supports a shaft (main shaft) 8 of a wind power generator. Although not shown, the shaft 8 is a member that rotates integrally with the blade, and the bearing device 10 is installed in the nacelle (machine room) on the tower of the wind power generator.
  • the bearing device 10 includes a rolling bearing 11.
  • An annular space in which a plurality of rolling elements 16 are provided is formed between the inner ring 12 and the outer ring 14 of the rolling bearing 11. This annular space is called the internal space 18.
  • the cleaning liquid is supplied to the internal space 18 for cleaning.
  • Grease is provided in the internal space 18, and the rolling bearing 11 is lubricated by this grease.
  • abrasion powder etc. are generated in the rolling bearing 11 and it is contained in grease.
  • Wear powder ⁇ 2020/175 417 5 (:171? 2020/007283
  • the center line of 0 is ⁇ .
  • the direction along the center line ⁇ is the axial direction of the bearing device 10, and is simply referred to as the “axial direction”.
  • the “axial direction” includes a direction parallel to the center line ⁇ 3.
  • the right side is the speed increaser (not shown) side of the wind power generator, and this speed increaser side is the one side in the axial direction.
  • One side in the axial direction of the shaft 8 is connected to the input shaft of the speed increaser.
  • the left side is the blade side, and this blade side is the other side in the axial direction.
  • the bearing device 10 includes a side cover 22 and a seal cover 24 in addition to the rolling bearing 11.
  • the rolling bearing 11 is provided in the bearing housing 20 in the nacelle and supports the shaft 8.
  • the rolling bearing 11 includes an inner ring 12 which rotates integrally with the shaft 8, an outer ring 14 mounted on the bearing housing 20 and a plurality of rolling elements provided between the inner ring 12 and the outer ring 14.
  • a moving body 16 is provided.
  • the rolling elements 16 of the present embodiment are convex rollers (rollers having a convex curved surface) and are provided in two rows.
  • the rolling bearing 11 is a spherical roller bearing.
  • the tubular member 9 is provided so as to be fitted onto the shaft 8.
  • the tubular members 9 are provided on both sides in the axial direction of the inner ring 12.
  • the tubular member 9 is a member that rotates integrally with the shaft 8.
  • the shaft 8 includes the tubular member 9.
  • the tubular member 9 may be omitted.
  • the side cover 22 is attached to the bearing housing 20 with a fixing screw (fixing bolt) 26.
  • the side cover 22 is an annular member.
  • the side covers 22 are provided on both sides of the rolling bearing 11 in the axial direction, and cover the internal space 18 from both sides in the axial direction.
  • the side cover 2 2 is called a tightened part 2 8 (female screw or bolt hole) that penetrates from the outer space (outer bearing) 3 2 of the rolling bearing 11 to the inner space (inner bearing) 18. ) Is formed.
  • Female thread 2 8 ⁇ 2020/175 417 6 ⁇ (: 171-1? 2020/007283
  • a first fastening member 30 (hereinafter referred to as a set screw or a male screw) for fixing the seal lid 24 is screwed onto the female screw 28.
  • the seal lid 24, together with the side lid 22, is provided on one side in the axial direction of the rolling bearing 11 and on the other side in the axial direction.
  • the seal lid 24 is an annular member.
  • a through hole 25 is formed in the seal lid 24 in the same arrangement as the female screw 28 of the side lid 22.
  • the set screw 30 is screwed through the through hole 25 to the threaded screw 28. As a result, the seal lid 24 is attached to the side lid 22 by the set screw 30.
  • a seal 34 is provided to prevent leakage to 2.
  • the seal 34 of the present embodiment is a labyrinth seal that is not in contact with the outer peripheral surface of the shaft 8 (cylindrical member 9). That is, a minute gap is formed along the circumferential direction between the inner peripheral surface of the annular seal lid 24 and the outer peripheral surface of the shaft 8. This gap prevents leakage of grease from the internal space 18.
  • the seal 34 is not limited to the form shown in FIG. 1, and a contact type seal may be applied, for example.
  • FIG. 2 is a cross-sectional view showing a state where the cleaning assembly jig 40 is attached to the bearing device 10.
  • the cleaning assembly jig 40 includes a cover 42, a seal member 44, and a second fastening member 46 (hereinafter referred to as a hollow screw or a hollow bolt).
  • the cover 42, the seal member 44, and the hollow screw 46 are provided on one side in the axial direction of the bearing device 10 and on the other side in the axial direction.
  • the cover 42, the seal member 44, and the hollow screw 46 have the same structure and function on one side in the axial direction and the other side in the axial direction.
  • FIG. 3 is a cross-sectional view of the bearing device 10 on one side in the axial direction. Constitution of cleaning jig 40 ⁇ 2020/175 417 7 ⁇ (:171? 2020 /007283
  • the cover 42 is an existing seal lid that was installed when the bearing device 10 was used.
  • FIG. 4 is an axial view of the cover 42 in the disassembled state.
  • the cover 42 is composed of two arc-shaped divided bodies 4 8. Flange portions 50 are provided at both ends in the circumferential direction of each divided body 48. The flange portions 50 of the adjacent divided bodies 4 8 are connected and fixed by bolts 5 2 3 and nuts 52. In this manner, the cover 4 2 has a single annular shape when the two divided bodies 4 8 are fixedly assembled and assembled.
  • the cover 4 2 (divided body 4 8) is provided with a plurality of holes 5 4 penetrating in the axial direction.
  • the arrangement of the holes 5 4 is the same as the arrangement of the female screws 2 8 formed on the side lid 2 2 (see FIG. 3).
  • in the cover 42 six holes 5 4 are formed at equal intervals along the circumferential direction. Hollow screws 4 6 are threaded into each hole 5 4.
  • the cover 42 of this embodiment is composed of a divided body 4 8 which is divided into two. The number of divisions of the cover 42 may be other than two. In this embodiment, three holes 5 4 are provided in the upper first division body 4 8 and three holes 5 4 are provided in the lower second division body 4 8. As shown in Fig.
  • the hollow screw 4 6 is screwed through the hole 5 4 into the female screw 2 8. Thereby, the divided body 48 is attached to the side cover 22.
  • a groove 5 6 having a !_ shape in cross section is formed on the inner peripheral side of the divided body 4 8.
  • a seal member 4 4 is provided in the groove 5 6.
  • one side of the shaft 8 in the axial direction is connected to the input shaft of the speed increaser.
  • the cover 42 is not a divided structure but an integrally formed annular member, it cannot be attached to the outer peripheral side of the shaft 8.
  • the cover 42 is composed of the plurality of divided bodies 48, it can be attached to the outer peripheral side of the shaft 8.
  • the cover 42 is composed of a plurality of arc-shaped divided bodies 48, and the plurality of divided bodies 48 are assembled. ⁇ 2020/175 417 8 ⁇ (:171? 2020 /007283
  • the seal member 44 is provided in the groove 5 6 of the divided body 4 8 as described above (see FIG. 3).
  • the seal member 4 4 is provided in the space formed between the side wall 62 and the inner peripheral wall 6 4 which form the groove 5 6 and the side surface 23 of the side surface lid 22.
  • the seal member 44 of the present embodiment is circular in cross section, that is, the seal member 44 is a ring.
  • the seal member 4 4 is not limited to the O ring, and for example, the seal member 4 4 4 may be an O ring, an X ring, or a Ting ring.
  • the seal member 4 4 is not annular so that the seal member 4 4 can be attached to the outer peripheral side of the shaft 8.
  • the seal member 4 4 has a string shape.
  • the seal member 44 may be divided into a plurality of pieces, but may be a single string having a length provided around the shaft 8 once. As a result, the seal member 44 is provided around the shaft 8 so that it becomes annular.
  • the cleaning liquid is supplied to the internal space 18 for cleaning.
  • the seal member 4 4 mounted in the groove 5 6 of the cover 4 2 (divided body 4 8), the seal member 4 4 contacts at least one of the side cover 2 2 and the cover 4 2 and also the shaft 8 Slidably contacts. Therefore, the seal member 44 can prevent the cleaning liquid in the internal space 18 from leaking between the shaft 8 (cylindrical member 9) and the cover 42.
  • the hollow screw 46 is inserted into the hole 54 provided in the divided body 48, and is screwed into the female screw 28 formed in the side cover 22.
  • the cover 4 2 (divided body 4 8) can be attached to the side cover 2 2 by tightening the hollow screw 4 6 to the female screw 2 8.
  • the hollow screw 46 has a hole 47 (hereinafter referred to as a hollow hole) provided therein.
  • the hollow hole 4 7 is a hole that penetrates the hollow screw 4 6 in its axial direction. That is, the hollow screw 4 6 has a hollow hole 4 7 penetrating from the head to the screw tip.
  • the hollow hole 47 functions as a flow path for supplying or discharging the cleaning liquid.
  • the head 58 of the hollow screw 46 is connected to the pipe 60 for supplying the cleaning liquid. ⁇ 2020/175 417 9 ⁇ (: 171? 2020 /007283
  • This cleaning method includes a removing process, an attaching process, a cleaning process, and a returning process.
  • FIG. 8 and remove the existing seal lid 2 4 from the side lid 2 2 by moving it in the axial direction as shown in FIG.
  • Figure 1 shows the seal lid 24 before removal.
  • FIG. 5 is an explanatory view of the removing process, and shows a state in which the seal lid 24 and the set screw 30 are removed from the side lid 22. Since the seal lid 24 is an annular member without a dividing surface, the seal lid 24 removed from the side lid 22 is left on the outer peripheral side of the shaft 8.
  • the cover 4 2 and the seal member 4 4 included in the cleaning assembly jig 40 should be attached to the bearing device 10.
  • the seal member 4 4 has a string shape, and the cover 4 2 is divided by a plurality of (two in the present embodiment) divided bodies 4 8. Therefore, the seal member 4 4 and the divided body 4 8 can be provided around the shaft 8.
  • the seal member 4 4 and the divided body 4 8 can be provided around the shaft 8.
  • a hollow screw 4 6 is passed through the hole 5 4 of the cover 4 2 and tightened to the female screw 28 of the side cover 2 2.
  • the cover 42 having the seal member 4 4 on the inner circumferential side is attached to the bearing device 10.
  • the cord-shaped seal member 44 is provided around the shaft 8 to form an annular shape, and the two divided bodies 4 8 are arranged in an annular shape.
  • the divided body 4 8 (cover 4 2) is attached to the side cover 2 2 by inserting 4 6 into the hole 5 4 of the divided body 4 8 and screwing it into the female screw 2 8 of the side cover 22.
  • the removing step and the attaching step are performed on both sides in the axial direction of the bearing device 10. After the mounting process, a cleaning process for cleaning the internal space 18 is performed. Therefore, as shown in FIG. 3, the pipe 60 is connected to the head 58 of each hollow screw 46. The pipe 60 is connected to hollow screws 46 on one side in the axial direction and on the other side in the axial direction. On one side in the axial direction and on the other side in the axial direction, the cover 42 of the present embodiment is provided with (see FIG. 4) an area above the center line ⁇ 3 (upper half) (upper division body 4 8). Three holes 5 4 are provided, and three holes 5 4 are provided in a region (lower half) lower than the center line ⁇ (lower divided body 48 ).
  • the pipe 60 connected to the hollow screw 46 through the hole 54 in the upper area is for the supply of cleaning liquid.
  • the pipe 60 connected to the hollow screw 4 6 through the hole 5 4 in the lower area is for draining the used cleaning liquid.
  • a cleaning liquid supply device (not shown) is connected to the supply pipe 60, and the cleaning liquid is supplied from the cleaning liquid supply device to the internal space 18 through the pipe 60 and the hollow screw 46.
  • the drain pipe 60 is connected to a tank for storing waste liquid.
  • the hollow hole 47 of the hollow screw 46 is opened toward the region through which the rolling element 16 passes.
  • the cleaning liquid is ejected from the hollow hole 4 7 of the hollow screw 4 6 through which the supply pipe 60 extends, and the grease adhering to the rolling elements 16 etc. is washed away.
  • the rolling bearing 11 is rotated.
  • a blade (not shown) may receive the wind to rotate the shaft 8 and the rolling bearing 11 (inner ring 12), and if the speed increaser side has a configuration to generate a rotational force, the shaft power is generated by the power. 8 and rolling bearing 11 (inner ring 12) may be rotated.
  • a valve (not shown) is provided in the discharge pipe 60, and the valve is closed at the beginning of the cleaning process. For this reason, the cleaning liquid is stored in the internal space 18. ⁇ 2020/175 417 1 1
  • the seal member 4 4 can prevent the cleaning liquid in the internal space 18 from leaking to the outside.
  • the valve is opened.
  • the cleaning liquid used for cleaning and the rinsed grease are discharged to the outside from the discharge pipe 60 connected to the hollow screw 46 in the lower region.
  • air may be supplied to the internal space 18 from the supply pipe 60 connected to the hollow screw 46 in the upper region.
  • the cleaning liquid may be discharged while supplying the cleaning liquid to the internal space 18.
  • the used cleaning liquid may be discharged by a suction pump.
  • the internal space 18 is cleaned by the cleaning liquid supplied to the internal space 18 through the hollow holes 47 of the hollow screw 46. Further, the cleaning liquid and the grease in the internal space 18 are discharged to the outside through the hollow hole 4 7 of another hollow screw 46.
  • a return step is performed to return the bearing device 10 from the state shown in FIG. 2 to the normal operating state shown in FIG.
  • the hollow screw 46 see Fig. 2
  • the bolt 523 and nut 52 can be removed.
  • the seal lid 24 that has been retracted to the outer peripheral side of the shaft 8 is moved in the axial direction so that it abuts against the side lid 22. Install.
  • the bearing device 10 returns to the state shown in FIG.
  • the existing one may be reused or replaced with a new one.
  • the cleaning assembly jig 40 of the present embodiment includes the cover 42, the seal member 44, and the hollow screw 46. Multiple covers 42 ⁇ 2020/175 417 12 boxes (:171? 2020/007283
  • the cover 42 becomes an annular member provided along the outer circumference of the shaft 8.
  • the seal member 44 is provided around the shaft 8 to form an annular shape, and is for preventing the cleaning liquid in the internal space 18 from leaking between the shaft 8 and the cover 42.
  • the hollow screw 46 is attached to the side cover 22 by screwing the hollow screw 46 onto the female screw 28 of the side cover 22.
  • the cleaning method performed by using the cleaning assembly jig 40 having the above configuration includes the removing step, the mounting step, the cleaning step, and the returning step.
  • the removal process loosen the setscrew 30 (see Fig. 1) to remove it from the female screw 28, and move the seal lid 24 axially (see Fig. 5) to separate it from the side lid 22.
  • the mounting process see Fig. 2), the seal member 4 4 is provided around the shaft 8 and the two divided bodies 4 8 are arranged in an annular shape. Then, each of the split bodies 4 8 (force bar 4 2) is attached to the side cover 22 by using a hollow screw 46 which is screwed into each of the females 28 of the side cover 22.
  • the internal space 18 is cleaned with the cleaning liquid supplied to the internal space 18 through the hollow holes 4 7 of the hollow screw 46.
  • the seal member 4 4 and a plurality of arc-shaped divided bodies 4 8 are arranged in an annular shape, and a hollow body is formed.
  • the split body 4 8 is attached to the side lid 2 2 using the screws 4 6 of.
  • the cleaning liquid can be supplied to the internal space 18 through the hollow holes 4 7 of the hollow screw 46, and the used cleaning liquid along with the rinsed grease can be externally supplied through the hollow holes 47 of the hollow screw 46. It can be discharged into the space 32 and is easily washed.
  • the rolling bearing 11 is a bearing (not shown) that supports a main shaft (shaft 8) that is provided in the nacelle of the wind power generator and rotates integrally with the blade. ⁇ 2020/175 417 13 ⁇ (:171? 2020 /007283
  • the nacelle In the case of a wind power generator, the nacelle is located at a high position on the tower, but the above cleaning method facilitates maintenance (cleaning) of the bearing device 10 in the nacelle.
  • a seal member 44 is provided around the shaft 8. This is to prevent the cleaning liquid supplied to the internal space 18 from leaking to the external space 32 in the subsequent cleaning process because the cleaning liquid has a lower viscosity and higher fluidity than the grease.
  • the existing seal 34 of the seal lid 24 is a labyrinth seal that is not in contact with the shaft 8. Therefore, in order to perform the cleaning with the cleaning liquid, the contact type seal member 4 4 is used instead of the seal (labyrinth seal) 34. This can prevent the cleaning liquid from leaking during cleaning. During normal operation, the grease in the internal space 18 is prevented from leaking by the seal (labyrinth seal) 34.
  • the seal member 4 4 and the divided body 4 8 mounted for cleaning are not continuously used.
  • the existing seal 34 in the seal lid 24 is a labyrinth seal that is non-contact with the shaft 8 as described above, and restores the seal used in normal operation to the non-contact type. This is because.
  • the rotation resistance of the shaft 8 is smaller than that of the contact type seal member 44. In other words, in normal operation, the labyrinth seal is restored to prevent the rotational resistance of the shaft 8 due to the seal member 4 4 from increasing.
  • the cleaning liquid is supplied from the hollow screws 4 6 installed in the upper region to the internal space 1 on each of the one side in the axial direction and the other side in the axial direction of the bearing device 10. 8 and the cleaning liquid in the internal space 18 is discharged from the hollow screw 46 installed in the lower area. Therefore, it is easy to collect the used cleaning liquid.
  • the arrangement of the hollow screw 46 for supply and the hollow screw 46 for discharge may be other than the above-mentioned embodiment.
  • the washing liquid is passed through the hollow holes 4 7 of at least one hollow screw 4 6. ⁇ 2020/175 417 14 (:171? 2020/007283
  • Fig. 6 is a diagram for explaining another form of the cleaning method.
  • the seal lid 24 is removed from the side lid 22.
  • the seal lid 24 may be evacuated to a retracted position axially separated from the side lid 22 (as in the above embodiment).
  • the removed seal lid 24 may be attached to the side lid 22 with the cover 4 2 (divided body 4 8) by a hollow screw 46. ..
  • the cover 42 is sandwiched between the side cover 22 and the seal cover 24.
  • the hollow screw 46 has a longer neck length (shaft portion) than the form shown in FIG. According to the embodiment shown in FIG. 6, even if the shaft 8 is rotated during the cleaning process, it is possible to prevent the seal lid 24 from rotating while sliding with the shaft 8.
  • the existing seal 34 provided on the seal lid 24 is not limited to a labyrinth seal, but may be a contact-type seal. If the internal thread 28 provided on the side cover 22 is not penetrated, additional processing may be performed on the side cover 22 to allow the internal thread 28 to pass through for cleaning.
  • At least one hollow screw 4 in the attaching step, at least one hollow screw 4
  • each of the divided bodies 4 8 is attached to the side cover 2 2 by means of 6, and each of the divided bodies 4 8 is attached using the hollow screw 4 6 and the solid screw (solid screw). It may be attached to the side cover 22. Then, in this case, in the cleaning process, the hollow liquid 4 6 is used to supply the cleaning liquid to the internal space 18 through the hollow hole 4 7 from the hollow screw 4 6 and the non-hollow male screw. It can be discharged or discharged.
  • the seal 34 has a structure that prevents grease from leaking from the shaft 9, but it may have a structure that prevents grease from leaking from the inner ring 12 as well.
  • the case where the shape of the cover 42, the seal member 44, and the hollow screw 46 is the same on one side in the axial direction and the other side in the axial direction has been described. The shapes may differ if they are the same.
  • the bearing device 10 has been described as having the side cover 22, the seal cover 24, and the male screw 30 on both sides in the axial direction, but one side or the other side in the axial direction is It does not have, but may be a closed structure, for example. In this case, the assembly jig 40 is applied on the non-sealed side.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne un procédé de nettoyage d'un espace interne entre une bague interne et une bague externe d'un dispositif de support comprenant les étapes consistant à : retirer un premier élément de fixation pour séparer un couvercle de joint du dispositif de support d'un couvercle de surface latérale du dispositif de support ; fournir un élément d'étanchéité sur la circonférence d'un arbre et agencer une pluralité de corps divisés dans une forme annulaire, puis visser un second élément de fixation sur des parties à fixer de façon à fixer les corps divisés respectifs au couvercle de surface latérale ; fournir un liquide de nettoyage à l'espace interne par l'intermédiaire du second élément de fixation pour nettoyer l'espace interne ; et amener le couvercle d'étanchéité en contact avec le couvercle de surface latérale et visser le premier élément de fixation sur les parties à fixer, de façon à amener le couvercle d'étanchéité à revenir.
PCT/JP2020/007283 2019-02-26 2020-02-25 Procédé de nettoyage de dispositif de support et gabarit d'ensemble de nettoyage Ceased WO2020175417A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019032418A JP2020133873A (ja) 2019-02-26 2019-02-26 軸受装置の洗浄方法及び洗浄用治具セット
JP2019-032418 2019-02-26

Publications (1)

Publication Number Publication Date
WO2020175417A1 true WO2020175417A1 (fr) 2020-09-03

Family

ID=72239108

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/007283 Ceased WO2020175417A1 (fr) 2019-02-26 2020-02-25 Procédé de nettoyage de dispositif de support et gabarit d'ensemble de nettoyage

Country Status (2)

Country Link
JP (1) JP2020133873A (fr)
WO (1) WO2020175417A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6626191B1 (en) * 1998-08-11 2003-09-30 David H Slabbert Method an apparatus for maintaining housed bearings
US20150377294A1 (en) * 2014-04-01 2015-12-31 Richard Smith Bearing Grease

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6626191B1 (en) * 1998-08-11 2003-09-30 David H Slabbert Method an apparatus for maintaining housed bearings
US20150377294A1 (en) * 2014-04-01 2015-12-31 Richard Smith Bearing Grease

Also Published As

Publication number Publication date
JP2020133873A (ja) 2020-08-31

Similar Documents

Publication Publication Date Title
CN103328842B (zh) 具有可更换密封装置的滚动轴承
US8246255B2 (en) Device for the axial locking of a guide shaft bearing in a turbomachine
JP2009144715A (ja) ターボ機械における軸受け支持体の締結装置の封止
CN205218665U (zh) 旋转接头支承构造部、机床的主轴以及电动机
JP5374593B2 (ja) 機械装置のシール構造、及び、風力発電装置
CN115478445B (zh) 一种钢丝绳刮涂油装置
CN107420346A (zh) 一种防抱死自润滑易维护离心泵
CN106640557B (zh) 用于执行风力涡轮的齿轮箱轴承上的塔上维护的方法
EP2772646A2 (fr) Eolienne
CN206498276U (zh) 一种新型电机轴承锁紧密封装置
WO2020175417A1 (fr) Procédé de nettoyage de dispositif de support et gabarit d'ensemble de nettoyage
CN205277699U (zh) 风力发电机组的轴承密封过滤结构及风力发电机
CN108361356B (zh) 用于修复风力涡轮机齿轮箱的轴承孔的系统和方法
US9976541B2 (en) Turbine main bearing lubrication
JP5437976B2 (ja) ガスタービン発電装置
CN208100260U (zh) 一种外圆挡套拆装工具
KR970004878Y1 (ko) 감속기 오일실 장착 슬리브
CN210344287U (zh) 一种防漏油密封装置
EP4663349A1 (fr) Outil de retrait et procédé pour joint d'étanchéité à espace d'air nul d'arbre d'hélice pouvant être mis en service
CN223459717U (zh) 一种单排交叉滚柱式回转支承
JP5343456B2 (ja) ころ軸受装置およびバックアップロール
JPS6213405Y2 (fr)
KR200397942Y1 (ko) 제철설비의 연속주조용 볼베어링을 갖춘 로타리 조인트
KR200236886Y1 (ko) 보조 샤프트를 구비한 링거롤 베어링 블록장치
CN105042039A (zh) 一种用于保护以及拆卸高速输入轴和输出轴的组合件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20762600

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20762600

Country of ref document: EP

Kind code of ref document: A1