CN113352274A - NJ bearing puller of movable blade adjustable axial flow fan bearing box - Google Patents
NJ bearing puller of movable blade adjustable axial flow fan bearing box Download PDFInfo
- Publication number
- CN113352274A CN113352274A CN202110465927.2A CN202110465927A CN113352274A CN 113352274 A CN113352274 A CN 113352274A CN 202110465927 A CN202110465927 A CN 202110465927A CN 113352274 A CN113352274 A CN 113352274A
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- Prior art keywords
- bearing
- flow fan
- puller
- axial flow
- hydraulic jack
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- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000001066 destructive effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
- B25B27/064—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races fluid driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention relates to an NJ bearing puller of a movable blade adjustable axial flow fan bearing box, wherein an NJ bearing is arranged on a main shaft in a bearing box, a thrust bearing is also arranged on the main shaft, a bearing ring is arranged between the NJ bearing and the thrust bearing, a plurality of oil guide holes are formed in the bearing ring, the puller comprises a base, a hydraulic jack, a lifting support and a plurality of groups of transmission modules, the transmission modules are inserted into the oil guide holes and connected with the base, the plurality of groups of transmission modules are symmetrically arranged relative to the axis of the main shaft, the hydraulic jack is arranged on the lifting support, the fixed end of the hydraulic jack is arranged on the base, and a telescopic rod of the hydraulic jack faces the main shaft and is coaxially arranged with the main shaft. Compared with the prior art, the invention improves the safety and the high efficiency of the production and maintenance process of the movable blade adjustable axial flow fan bearing box.
Description
Technical Field
The invention relates to a fan maintenance technology, in particular to an NJ bearing puller of a movable blade adjustable axial flow fan bearing box.
Background
Blower factory maintenance personal is carrying out the in-process that disintegrates the maintenance to axial fan with adjustable movable vane, inevitably will need to be changed reaching maintenance cycle or having trouble or damaged bearing, as shown in fig. 1, the cover has NJ bearing 8 on the fan bearing incasement main shaft 10, thrust bearing 7 and NU bearing 12, be equipped with bearing ring 9 between NJ bearing 8 and the thrust bearing 7, need dismantle NJ bearing 8 of bearing incasement main shaft 10 when disintegrating the maintenance, because of NJ bearing 8 is inner circle single flange cylindrical roller bearing, NJ bearing 8's self structural feature restriction it can only move toward one direction, so it is difficult to realize the separation of inner and outer lane at dismantlement in-process NJ bearing 8, current 8 modes of dismantling the NJ bearing mainly include hammer percussive and violently destroy the formula.
Hammer percussive: because the NJ bearing 8 is installed by adopting tight force fit, the bearing inner ring is subjected to pre-heating treatment when the NJ bearing 8 is disassembled, when the disassembling temperature is reached, a certain amount of clearance is generated between the bearing inner ring and the main shaft 10, and the disassembling operation needs to be carried out by using a hammer and a copper bar to knock the bearing outer ring. Because the bearing box is designed and installed with the bearing ring 9 in the middle, the position of the copper rod cannot be horizontally arranged, the copper rod cannot be completely synchronized by manual knocking, the synchronism is poor in the disassembling process, the left and right stress is uneven, the inclined seizure is caused easily, the surface precision and the operation reliability of the main shaft of the equipment are affected, and meanwhile, the manual knocking mode is adopted, so that certain injury risks of personnel and equipment exist, and potential safety hazards exist;
wind welding destructive formula: when the bearing with larger tightening force or seizure cannot be disassembled by the hammer knocking method, only the wind welding destructive method can be adopted, the wind welding manual destructive cutting method is adopted for manual destructive cutting, and the damage to the surface of the main shaft of the bearing box equipment and the irreversible damage are easily caused due to the uncontrollable manual operation precision.
In conclusion, the existing mode for disassembling the NJ bearing cannot be used for quickly, nondestructively and safely disassembling the NJ bearing in the bearing box, so that the overhauling process is low in efficiency and reliability.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the NJ bearing puller of the movable blade adjustable axial flow fan bearing box, so that the safety and the high efficiency of the production and maintenance process of the movable blade adjustable axial flow fan bearing box are improved.
The purpose of the invention can be realized by the following technical scheme:
an NJ bearing puller of a movable blade adjustable axial flow fan bearing box is characterized in that an NJ bearing is arranged on a main shaft in a bearing box, a thrust bearing is further arranged on the main shaft, a bearing ring is arranged between the NJ bearing and the thrust bearing, and a plurality of oil guide holes are formed in the bearing ring;
the puller comprises a base, a hydraulic jack, a lifting support and a plurality of groups of transmission modules, wherein the transmission modules are inserted into oil guide holes and connected with the base, the groups of transmission modules are symmetrically arranged around the axis of a main shaft, the hydraulic jack is arranged on the lifting support, the fixed end of the hydraulic jack is arranged on the base, a telescopic rod of the hydraulic jack faces the main shaft and is coaxially arranged with the main shaft, pretightening force is applied to the main shaft through the telescopic end of the hydraulic jack, at the moment, the base applies certain pretensioning force to a bearing ring through the two groups of transmission modules, the inner ring of an NJ bearing is heated through wind welding, after the bearing is heated to proper temperature, a certain amount of clearance is generated between the inner ring of the NJ bearing and the main shaft, the hydraulic jack continues to apply pressure to the main shaft, the base is simultaneously subjected to the reaction force of the hydraulic jack and applies pulling force to the bearing ring through the transmission modules, slowly pulling out the bearing ring and the NJ bearing to finish the disassembly of the NJ bearing;
the puller utilizes the structural characteristics of the original design part of the bearing box, the hydraulic jack uniformly applies pressure to the bearing ring through a plurality of groups of transmission modules, the condition of oblique seizure is avoided, the safety is good, the reliability is high, the labor is saved, the labor cost is reduced, and the production efficiency is improved.
Furthermore, each group of transmission modules comprises a drawing pin, an adapter plate and a screw rod which are connected in sequence.
Further, the drawing pin comprises a bolt and a bolt, the bolt is matched with the oil guide hole, and the bolt is coaxially arranged at the end part of the bolt.
Furthermore, one end of the screw rod is fixedly connected with the base through a high-strength bolt, and the other end of the screw rod is in threaded connection with the adapter plate.
Furthermore, the adapter plate comprises a connecting plate and a nut on the connecting plate, a threaded hole is formed in the connecting plate, and the drawing pin is in threaded connection with the connecting plate through the threaded hole.
Further, the nut is welded with the connecting plate.
Further, the lifting support include support and fixing base, hydraulic jack horizontal place in the support, the support on vertically be equipped with the threaded rod, the fixing base on be equipped with the sleeve, the sleeve inboard be equipped with the internal thread that the threaded rod matches, the threaded rod screw in sleeve in.
Furthermore, the bracket is of a groove type and can limit the hydraulic jack.
Furthermore, the hydraulic jack is a pressing type hydraulic jack, an operator can adjust the pressure in time according to the reading of an oil pump pressure gauge of the hydraulic jack, the spindle cannot be damaged, and the safety is good.
Furthermore, the base is made of groove-shaped steel, so that the rigidity is high and the weight is light.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention comprises a base, a hydraulic jack, a lifting support and a plurality of groups of transmission modules, wherein the plurality of groups of transmission modules are symmetrically arranged around the axis of a main shaft, the telescopic rod of the hydraulic jack is coaxially arranged with the main shaft and applies pretightening force to the main shaft, at the moment, the base applies certain pretensioning force to a bearing ring through the two groups of transmission modules, the inner ring of an NJ bearing is heated through wind welding, after the bearing is heated to proper temperature, a certain amount of clearance is generated between the inner ring of the NJ bearing and the main shaft, the hydraulic jack continues to apply pressure to the main shaft, the base is simultaneously subjected to the reaction force of the hydraulic jack and applies pulling force to the bearing ring through the transmission modules, the bearing ring and the NJ bearing are slowly pulled out, the disassembly of the NJ bearing is completed, the puller utilizes the structural characteristics of the originally designed parts of a bearing box, the hydraulic jack uniformly applies pressure to the bearing ring through the plurality of groups of transmission modules, and the oblique seizure is avoided, the NJ bearing dismounting machine has the advantages that the safety is good, the reliability is high, dismounting work can be completed by at least two persons when the NJ bearing is dismounted, the labor cost is reduced, and the production efficiency is improved;
(2) each group of transmission modules comprises a drawing pin, an adapter plate and a screw rod which are connected in sequence, wherein the drawing pin comprises a bolt and a bolt coaxially arranged at the end part of the bolt, the bolt is matched with an oil guide hole, the adapter plate comprises a connecting plate and a nut, the connecting plate is welded with the nut, a threaded hole matched with the bolt is formed in the connecting plate, one end of each screw rod is fixed on a base through a high-strength bolt, the other end of each screw rod is in threaded connection with the nut of the adapter plate, the bolt of the drawing pin penetrates through the threaded hole in the connecting plate, the bolt of the drawing pin is inserted into the oil guide hole, each part of each transmission module can be independently replaced, the transmission module is safe and reliable and long in service life, meanwhile, the transmission module can be suitable for bearing boxes of different models only by replacing the drawing pins of different sizes, and the application range is wide;
(3) the lifting support comprises a support and a fixed seat, a hydraulic jack is horizontally placed in the support, a threaded rod is vertically arranged on the support, a sleeve is arranged on the fixed seat, an internal thread matched with the threaded rod is arranged on the inner side of the sleeve, the threaded rod is screwed into the sleeve, the coaxial arrangement of a telescopic rod of the hydraulic jack and a main shaft is ensured by finely adjusting the height of the lifting support, the uniform force transmission during the disassembly is ensured, and the damage to the main shaft and a puller is avoided;
(4) the hydraulic jack is a press type hydraulic jack, an operator can adjust the pressure in time according to the reading of an oil pump pressure gauge of the hydraulic jack, the spindle cannot be damaged, and the safety is good.
Drawings
FIG. 1 is a schematic structural view of a spindle;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a perspective view of the drawing pin;
FIG. 4 is a front view of the pull pin;
FIG. 5 is a top view of the pull pin;
FIG. 6 is a schematic perspective view of the interposer;
FIG. 7 is a front view of the adapter plate;
FIG. 8 is a cross-sectional view of an interposer;
FIG. 9 is a front view of the lifting bracket;
FIG. 10 is a side view of the lifting bracket;
the reference numbers in the figures illustrate:
1. the hydraulic lifting device comprises a drawing pin, 2. an adapter plate, 3. a screw rod, 4. a base, 5. a hydraulic jack, 6. a high-strength bolt, 7. a thrust bearing, 8. an NJ bearing, 9. a bearing ring, 10. a main shaft, 11. a lifting support, 12. an NU bearing, 13. an oil guide hole, 14. a bolt, 15. a bolt, 21. a connecting plate, 22. a nut, 23. a threaded hole, 111. a support, 112. a threaded rod, 113. a sleeve and 114. a fixed seat.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in figure 1, an NJ bearing 8, a thrust bearing 7 and an NU bearing 12 are sleeved on a main shaft 10 in a bearing box of the movable blade adjustable axial flow fan, a bearing ring 9 is arranged between the NJ bearing 8 and the thrust bearing 7, and a plurality of oil guide holes 13 are symmetrically arranged on the bearing ring 9.
An NJ bearing puller of a movable blade adjustable axial flow fan bearing box is used for detaching an NJ bearing 8 and comprises a base 4, a hydraulic jack 5 and a lifting support 11, wherein the base 4 is made of groove-shaped steel, the hydraulic jack 5 is a pressing type hydraulic jack, the base 4 is connected with a bearing ring 9 through two groups of transmission modules, the hydraulic jack 5 is arranged on the lifting support 11, the fixed end of the hydraulic jack is arranged on the base 4, and an expansion link of the hydraulic jack faces a main shaft 10 and is coaxially arranged with the main shaft 10;
each group of transmission modules comprises a drawing pin 1, an adapter plate 2 and a screw rod 3;
as shown in fig. 3, 4 and 5, the drawing pin 1 comprises a bolt 14 and a plug pin 15 coaxially arranged at the end of the bolt 14, wherein the plug pin 15 is matched with the oil guide hole 13;
as shown in fig. 6, 7 and 8, the adapter plate 2 comprises a connecting plate 21 and a nut 22, the connecting plate 21 is welded with the nut 22, and the connecting plate 21 is provided with a threaded hole 23 matched with the bolt 14;
one end of each screw rod 3 is fixed on the base 4 through a high-strength bolt 6, the other end of each screw rod is in threaded connection with a nut 22 of the adapter plate 2, a gasket is arranged between the high-strength bolt 6 and the base 4, a bolt 14 of the drawing pin 1 penetrates through a threaded hole 23 in the connecting plate 21, and a bolt 15 of the drawing pin 1 is inserted into the oil guide hole 13.
As shown in fig. 9 and 10, the lifting bracket 11 includes a bracket 111 and a fixed seat 114, the hydraulic jack 5 is horizontally placed in the bracket 111, a threaded rod 112 is vertically arranged on the bracket 111, a sleeve 113 is arranged on the fixed seat 114, an inner side of the sleeve 113 is provided with an inner thread matched with the threaded rod 112,
the threaded rod 112 is screwed into the sleeve 113, and the height of the bracket 111 is adjusted by rotating the sleeve 113, so that the telescopic end of the hydraulic jack 5 is ensured to be in a position concentric with the main shaft 10.
The working process of the drawing device is as follows:
horizontally placing the main shaft 10 on a sleeper;
assembling a transmission module: screwing the bolt 14 into the threaded hole 23, and connecting the screw rod 3 with the nut 22;
inserting the bolts 15 of the two groups of transmission modules into two oil guide holes 13 on the bearing ring 9 respectively, wherein the two oil guide holes 13 are distributed in a way of forming 180 degrees at the opposite angles;
horizontally placing the hydraulic jack 5 in the bracket 111, and adjusting the height of the bracket 111 to enable the telescopic end of the hydraulic jack 5 to be in a position concentric with the main shaft 10;
the base 4 is tightly attached to the fixed end of the hydraulic jack 5, the end part of the screw rod 3 is fixed on the base 4 through the high-strength bolt 6, pretightening force is applied to the main shaft 10 through the telescopic end of the hydraulic jack 5, and at the moment, the base 4 applies certain pretensioning force to the bearing ring 9 through the two groups of transmission modules;
the inner ring of the NJ bearing 8 is heated through wind welding, after the bearing is heated to a proper temperature, a certain amount of clearance is generated between the inner ring of the NJ bearing 8 and the main shaft 10, and when the reading of an oil pump pressure gauge of the hydraulic jack 5 is rapidly reduced, the operating rod of the hydraulic jack 5 is rapidly pressed, the NJ bearing 8 is slowly pulled out, and the disassembly is completed.
The embodiment provides an NJ bearing puller of a movable blade adjustable axial flow fan bearing box, which utilizes the structural characteristics of the original design parts of the bearing box, a hydraulic jack 5 uniformly applies pressure to a bearing ring 9 through two groups of transmission modules, an operator can adjust the pressure in time according to the reading of an oil pump pressure gauge of the hydraulic jack 5, and the spindle 10 cannot be damaged;
meanwhile, the drawing pin 1 with different sizes can be adapted to bearing boxes with different models, meanwhile, the drawing device is easy and convenient to disassemble and assemble, each part can be replaced independently, the drawing device is safe and reliable, the service life is long, the disassembling work can be completed by only two persons at least when the NJ bearing 8 is disassembled, the labor cost is reduced, and the production efficiency is improved.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An NJ bearing puller of a movable blade adjustable axial flow fan bearing box is characterized in that an NJ bearing (8) is arranged on a main shaft (10) in a bearing box, a thrust bearing (7) is further arranged on the main shaft, a bearing ring (9) is arranged between the NJ bearing (8) and the thrust bearing (7), and a plurality of oil guide holes (13) are formed in the bearing ring (9);
its characterized in that, the puller include base (4), hydraulic jack (5), lifting support (11) and a plurality of transmission module of group, transmission module insert oil guide hole (13) to be connected with base (4), a plurality of transmission module of group about main shaft (10) axle center symmetry setting, hydraulic jack (5) set up on lifting support (11), and its stiff end setting is on base (4), its telescopic link towards main shaft (10), and with main shaft (10) coaxial setting.
2. The NJ bearing puller of the movable blade adjustable axial flow fan bearing box as claimed in claim 1, wherein each group of transmission modules comprises a pulling pin (1), an adapter plate (2) and a screw rod (3) which are connected in sequence.
3. The NJ bearing puller of the bearing box of the movable blade adjustable axial flow fan as claimed in claim 2, characterized in that the pulling pin (1) comprises a bolt (14) and a bolt (15), the bolt (15) is matched with the oil guide hole (13), and the bolt (15) is coaxially arranged at the end of the bolt (14).
4. The NJ bearing puller of the movable blade adjustable axial flow fan bearing box as claimed in claim 2, wherein one end of the screw rod (3) is fixedly connected with the base (4) through a high-strength bolt (6), and the other end of the screw rod is in threaded connection with the adapter plate (2).
5. The NJ bearing puller for the bearing box of the movable blade adjustable axial flow fan as claimed in claim 2, wherein the adapter plate (2) comprises a connecting plate (21) and a nut (22) on the connecting plate (21), a threaded hole (23) is formed in the connecting plate (21), and the pull-out pin (1) is in threaded connection with the connecting plate (21) through the threaded hole (23).
6. The NJ bearing puller for the bearing box of the axial flow fan with adjustable blades as claimed in claim 5, characterized in that the nut (22) and the connecting plate (21) are welded.
7. The NJ bearing puller of the movable blade adjustable axial flow fan bearing box as claimed in claim 1, wherein the lifting support (11) comprises a support (111) and a fixed seat (114), the hydraulic jack (5) is horizontally placed in the support (111), a threaded rod (112) is vertically arranged on the support (111), a sleeve (113) is arranged on the fixed seat (114), an internal thread matched with the threaded rod (112) is arranged on the inner side of the sleeve (113), and the threaded rod (112) is screwed into the sleeve (113).
8. The NJ bearing puller for the bearing box of the axial flow fan with adjustable blades as claimed in claim 7, characterized in that said bracket (111) is groove-shaped.
9. The NJ bearing puller for the bearing box of the movable blade adjustable axial flow fan as recited in claim 1, wherein the hydraulic jack (5) is a push type hydraulic jack.
10. The NJ bearing puller for the bearing box of the axial-flow fan with adjustable blades as claimed in claim 1, characterized in that the base (4) is a channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465927.2A CN113352274A (en) | 2021-04-28 | 2021-04-28 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465927.2A CN113352274A (en) | 2021-04-28 | 2021-04-28 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113352274A true CN113352274A (en) | 2021-09-07 |
Family
ID=77525681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110465927.2A Pending CN113352274A (en) | 2021-04-28 | 2021-04-28 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113352274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714969A (en) * | 2021-09-27 | 2021-11-30 | 华能（上海）电力检修有限责任公司 | Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut |
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| CN204658337U (en) * | 2015-04-22 | 2015-09-23 | 中节能港能风力发电（张北）有限公司 | A kind of bearing disassembling device |
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| CN208867104U (en) * | 2018-10-15 | 2019-05-17 | 宝钢集团新疆八一钢铁有限公司 | Improved bearing inner-ring puller chuck |
| CN211688048U (en) * | 2020-01-20 | 2020-10-16 | 东莞市捷盛汽车设备有限公司 | Vehicle support frame |
| CN217256016U (en) * | 2021-04-28 | 2022-08-23 | 华能（上海）电力检修有限责任公司 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
-
2021
- 2021-04-28 CN CN202110465927.2A patent/CN113352274A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200329522Y1 (en) * | 2003-07-23 | 2003-10-10 | 박정식 | A regulator device of chair |
| CN204658337U (en) * | 2015-04-22 | 2015-09-23 | 中节能港能风力发电（张北）有限公司 | A kind of bearing disassembling device |
| CN108838941A (en) * | 2018-08-17 | 2018-11-20 | 哈尔滨电气动力装备有限公司 | 1011000 core main pump piston ring installation and removal devices |
| CN208867104U (en) * | 2018-10-15 | 2019-05-17 | 宝钢集团新疆八一钢铁有限公司 | Improved bearing inner-ring puller chuck |
| CN211688048U (en) * | 2020-01-20 | 2020-10-16 | 东莞市捷盛汽车设备有限公司 | Vehicle support frame |
| CN217256016U (en) * | 2021-04-28 | 2022-08-23 | 华能（上海）电力检修有限责任公司 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714969A (en) * | 2021-09-27 | 2021-11-30 | 华能（上海）电力检修有限责任公司 | Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut |
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