CN111761295A - Nondestructive separation and disassembly method for main shaft and bearing of wind generating set - Google Patents
Nondestructive separation and disassembly method for main shaft and bearing of wind generating set Download PDFInfo
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- CN111761295A CN111761295A CN202010495533.7A CN202010495533A CN111761295A CN 111761295 A CN111761295 A CN 111761295A CN 202010495533 A CN202010495533 A CN 202010495533A CN 111761295 A CN111761295 A CN 111761295A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000000926 separation method Methods 0.000 title claims abstract description 9
- 238000005498 polishing Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 42
- 238000009413 insulation Methods 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000007517 polishing process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 16
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- 230000006698 induction Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 208000001034 Frostbite Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
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- 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
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- Manufacture Of Motors, Generators (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a nondestructive separation and disassembly method of a main shaft and a bearing of a wind generating set, which comprises the following steps of 1) separating and disassembling the main shaft and a check ring on the bearing; 2) polishing a process gap of a lower bearing retainer ring; 3) disassembling a roller, a retainer and a bearing outer ring raceway body of a bearing main body part; 4) the bearing inner ring raceway body of the bearing main body part is separated from the main shaft and detached; 5) and (5) disassembling the main shaft and the lower retainer ring of the bearing. The method ensures that the main shaft is not damaged when the bearing and the main shaft are separated and disassembled, and simultaneously reduces the damaged degree of the bearing, so that the main shaft and the bearing can be reused, and the cost is greatly saved.
Description
Technical Field
The invention relates to the technical field of wind generating sets, in particular to a nondestructive separation and disassembly method of a main shaft and a bearing of a wind generating set.
Background
The matching mode of the main shaft and the bearing of the wind generating set is interference fit, and the main shaft and the bearing are accidentally clamped in the assembling process; the condition that the main shaft and the bearing need to be disassembled and maintained may also occur in the service stage of the wind turbine generator. The main shaft and the bearing are required to be detached for the situation. Because the bearing and the main shaft are in interference fit, the main shaft is easily damaged in a destructive manner in the dismounting process.
There are two methods for detaching the main shaft from the bearing.
1) Cutting the bearing outer ring roller path body in a flame cutting mode, and then taking out the bearing roller and the retainer; and cutting the bearing inner ring raceway body by using an angle grinder, and taking out the bearing inner ring raceway body after cutting off, so that the bearing is separated from the main shaft. The bearing is damaged destructively in such a way, and the bearing needs to be scrapped completely; meanwhile, when a bearing inner ring roller path body is cut, the main shaft body is easily damaged, so that the main shaft body needs to be repaired or even scrapped;
2) the bearing and the main shaft are separated and disassembled under the action of external force by cooling the main shaft of the bearing, heating the inner ring of the bearing and then utilizing the disassembling tool. In the mode, liquid nitrogen is needed for cooling the main shaft, so that the cooling limit is difficult to control, the main shaft body is easy to be embrittled at low temperature, and the safety risks of low-temperature frostbite and suffocation are easily caused to operators; meanwhile, due to the cooling timeliness of the main shaft and the heating timeliness of the bearing inner ring, the clearance generated by expansion with heat and contraction with cold between the main shaft and the bearing is difficult to control and can offset the interference magnitude of the bearing assembly, so that when the bearing is pulled and separated by external force, the main shaft body is easy to be damaged by pulling.
Therefore, the two methods have various defects, and damage to the main shaft body is easily caused, so that a method for dismounting the main shaft without damage is urgently needed to be designed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a nondestructive separation and disassembly method of a main shaft and a bearing of a wind generating set, so that the main shaft is not damaged when the bearing and the main shaft are separated and disassembled, the damaged degree of the bearing is reduced, the main shaft and the bearing can be reused, and the cost is greatly saved.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a method for nondestructively separating and disassembling a main shaft and a bearing of a wind generating set comprises the following steps,
1) the main shaft is separated from a retainer ring on the bearing and is disassembled;
the frock that needs to be equipped with has: the lifting device, the heat insulation cushion block, the heater and the check ring are disassembled from the S-shaped lifting hook;
1.1) separating the main body part of the bearing from the upper retainer ring by using a heat insulation cushion block for separating the main body part from the upper retainer ring, uniformly winding a heating cable of a heater on the outer side of the upper retainer ring, and then heating the upper retainer ring to 85 +/-3 ℃;
1.2) measuring the gap between the upper retainer ring and the main shaft, quickly removing the heating cable when the gap is 0.15-0.2 mm, and using a plurality of retainer rings to remove the S-shaped lifting hooks and uniformly installing the S-shaped lifting hooks on the upper retainer ring along the circumferential direction of the upper retainer ring; connecting a lifting device with a plurality of retainer ring disassembling S-shaped lifting hooks, knocking an upper retainer ring to separate the upper retainer ring from a main body part of a bearing, and then lifting the upper retainer ring to separate and disassemble the upper retainer ring from a main shaft;
2) polishing a process gap of a lower bearing retainer ring;
2.1) packing and sealing the bearing to prevent grinding debris from entering an inner cavity of the bearing;
2.2) polishing a process notch for inclining the bearing outer ring roller way body on the lower retainer ring, wherein the upper row of rollers right above the process notch and the lower row of rollers opposite to the upper row of rollers can be completely exposed when the bearing outer ring roller way body presses to the process notch;
2.3) cleaning the position of the process gap and polishing scraps on the bearing;
3) disassembling a roller, a retainer and a bearing outer ring raceway body of a bearing main body part;
the frock that needs to be equipped with has: the hoisting device and the bearing roller path body hoisting tool;
3.1) pressing down the bearing outer ring roller path body towards the direction of the polished process gap to incline the bearing outer ring roller path body, so that part of the upper row of rollers and part of the lower row of rollers are completely exposed;
3.2) tapping the upper row of rollers from bottom to top along the exposed outer surface of the upper row of rollers to enable the upper row of rollers to knock off the retainer;
3.3) all the exposed upper-row rollers are to be removed, and then the exposed outer surfaces of the lower-row rollers are tapped from top to bottom to enable the lower-row rollers to be knocked off the retainer, so that all the exposed lower-row rollers are removed;
3.4) adjusting a bearing outer ring raceway body to expose the upper row of rollers and the lower row of rollers which are not removed, and returning to the step 3.2) until the rest rollers are alternately removed;
3.5) connecting one end of each bearing roller path body hoisting tool with the bearing outer ring roller path body respectively, connecting a lifting lug at the other end with a hoisting device, and hoisting the bearing outer ring roller path bodies out through the hoisting device;
3.6) connecting the lifting device with the retainer, and then lifting out the retainer through the lifting device;
4) the bearing inner ring raceway body of the bearing main body part is separated from the main shaft and detached;
the frock that needs to be equipped with has: the lifting device, the heater and the bearing roller path body lifting tool;
4.1) uniformly winding a heating cable of a heater on a bearing inner ring roller path body, setting the heating temperature to be 120-125 ℃, and starting heating;
4.2) in the heating process, measuring the gap value between the bearing inner ring raceway body and the main shaft, stopping heating when the gap value reaches 0.20-0.22 mm, and quickly removing the heating cable joint;
4.3) connecting one end of each bearing roller path body hoisting tool with the bearing inner ring roller path body respectively, connecting a lifting lug at the other end with a hoisting device, hoisting the bearing inner ring roller path body through the hoisting device, and separating and disassembling the bearing inner ring roller path body from the main shaft;
5) disassembling the main shaft and a lower bearing retainer ring;
the frock that needs to be equipped with has: the lifting device, the heat insulation cushion block, the heater and the check ring are disassembled from the S-shaped lifting hook;
5.1) separating the main shaft and a lower retainer ring of the bearing by using a heat insulation cushion block, uniformly winding a heating cable of a heater on the outer side of the lower retainer ring, and then heating the lower retainer ring to 85 +/-3 ℃;
5.2) measuring the gap between the lower retainer ring and the main shaft, stopping heating when the gap is 0.15-0.2 mm on one side, quickly removing the heating cable, and uniformly installing a plurality of retainer rings on the lower retainer ring along the circumferential direction of the lower retainer ring by detaching S-shaped lifting hooks; the lifting device is used for being connected with the S-shaped lifting hooks for disassembling the check rings, the lower check ring is knocked to be separated from the main shaft, and then the lower check ring is lifted to be separated from the main shaft for disassembling.
Further, in the step 2.2), before the gap of the polishing process is performed, a steel backing plate is padded between the lower row of rollers and the lower retainer ring to prevent the lower row of rollers from being damaged when the gap of the polishing process is polished.
Further, the bearing roller path body hoisting tool is of a V-shaped structure, and a lifting lug is arranged at the end of one side edge of the V-shaped structure.
Further, the heat insulation cushion block is a heat insulation wood cushion.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the method for nondestructively separating and disassembling the main shaft and the bearing ensures that the main shaft is not damaged by separating and disassembling the main shaft and the bearing by adopting a process notch on a lower retainer ring of the bearing and a medium-frequency induction heating mode on a raceway body of an inner ring of the bearing, reduces the damaged degree of the bearing to the maximum extent, enables the main shaft and the bearing to be reused, greatly saves the cost, reduces the operation difficulty and reduces the potential safety hazard in the operation process.
Drawings
FIG. 1 is a schematic diagram of the operation of step 1.1) of the present invention.
FIG. 2 is a schematic diagram of the operation of step 1.2) of the present invention.
FIG. 3 is a schematic view of the initial operation of the process gap grinding of the lower retaining ring of the present invention.
FIG. 4 is a schematic view of the operation of pressing the raceway body of the bearing outer ring of the present invention down toward the process gap.
Fig. 5 is a schematic view showing the operation of removing the upper row of rollers of the present invention.
Fig. 6 is an operational view of the bearing outer ring raceway of the present invention being lifted out.
FIG. 7 is a schematic diagram of the operation of step 5.1) of the present invention.
Fig. 8 is a schematic structural diagram of the bearing raceway hoisting tool of the invention.
Fig. 9 is a schematic structural view of the retainer ring dismounting S-shaped hook of the invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
The method for nondestructively separating and disassembling the main shaft and the bearing of the wind generating set comprises the following steps,
1) the main shaft 1 is separated from an upper retainer ring 2 of a bearing and is disassembled;
the frock that needs to be equipped with has: a hoisting device (comprising a travelling crane, a sling and a shackle), a flat copper crowbar, a copper bar 8, a clearance gauge, a heat insulation wood block 5, a medium frequency induction heater and a check ring are used for disassembling an S-shaped lifting hook 7 (as shown in figure 9);
1.1) as shown in figure 1, a main body part 3 of the bearing is separated from an upper retainer ring 2 of the bearing by a heat insulation wood block 5, the main body part and the upper retainer ring are separated, a heating cable 6 of a medium-frequency induction heater is uniformly wound on the outer side of the upper retainer ring 2, and then the upper retainer ring 2 is heated to 85 +/-3 ℃;
1.2) measuring the gap between the upper retainer ring 2 and the main shaft 1 by using a feeler gauge, quickly removing the heating cable 6 when the gap is 0.15-0.2 mm, and removing the S-shaped lifting hooks 7 by using 3 retainer rings to uniformly install the S-shaped lifting hooks on the upper retainer ring 2 along the circumferential direction of the upper retainer ring 2; connecting a lifting hook of a travelling crane with a check ring disassembling S-shaped lifting hook 7 by using a hanging strip and a shackle, knocking the upper check ring 2 by using a flat copper crowbar and a copper bar 8 to separate the upper check ring from the main body part 3 of the bearing as shown in figure 2, and further hoisting the upper check ring 2 to separate and disassemble the upper check ring from the main shaft 1;
2) polishing a process notch 401 of a lower retainer ring 4 of the bearing;
the frock that needs to be equipped with has: the device comprises an angle grinder, a rotary file, a high-pressure air gun, a winding film, a cleaning agent and a steel base plate;
2.1) wrapping and sealing the bearing by adopting a winding film to prevent polishing debris from entering an inner cavity of the bearing;
2.2) placing a steel base plate between the lower row of rollers and the lower retainer ring 4 of the bearing to prevent the lower row of rollers from being damaged when the process notch 401 is ground; an angle grinder and a rotary file are alternately adopted to grind a process notch 401 on the lower retainer ring 4, as shown in fig. 3, when a bearing outer ring roller path body 302 presses the process notch 401, the upper row of rollers 301 right above the process notch 401 and the lower row of rollers opposite to the upper row of rollers can be completely exposed;
2.3) cleaning the position of the process notch 401 and polishing debris on the bearing by adopting a high-pressure air gun and a cleaning agent;
3) disassembling the rollers of the bearing main body part 3, the retainer 303 and the bearing outer ring raceway body 302;
the frock that needs to be equipped with has: a hoisting device (a travelling crane, a sling and a shackle), a flat copper crowbar, a copper bar 8, a rubber hammer and a bearing roller way body hoisting tool 9 (as shown in figure 8);
3.1) pressing the bearing outer ring raceway body 302 downwards towards the direction of the polished process notch 401 to enable the bearing outer ring raceway body 302 to incline, as shown in FIG. 4, and further enabling part of the upper row rollers 301 and part of the lower row rollers to be completely exposed;
3.2) as shown in FIG. 5, tapping the upper row of rollers 301 along the exposed outer surface of the upper row of rollers 301 from bottom to top by using a copper bar 8 to knock the upper row of rollers 301 off the retainer 303, or inserting a flat copper crowbar into a gap between the upper row of rollers 301 and the retainer 303, tapping the flat copper crowbar by using a rubber hammer to pry the upper row of rollers 301 off the retainer 303;
3.3) all the exposed upper-row rollers 301 (which account for about one fourth of the total number of the upper-row rollers 301) are to be removed, then the copper rod 8 is used for tapping the outer surfaces of the exposed lower-row rollers from top to bottom to knock the lower-row rollers off the retainer 303, or a flat copper crowbar is inserted into a gap between the lower-row rollers and the retainer 303, a rubber hammer is used for tapping the flat copper crowbar to pry the lower-row rollers off the retainer 303, and all the exposed lower-row rollers (which account for about one fourth of the total number of the lower-row rollers) are removed;
3.4) adjusting the bearing outer ring raceway body 302, further exposing the upper row of rollers 301 and the lower row of rollers of the undetached part, and returning to the step 3.2) until the rest rollers are alternatively disassembled;
3.5) as shown in FIG. 6, respectively hooking the two sides of the bearing outer ring raceway body 302 by the bearing raceway body hoisting tools 9 with 2V-shaped structures, wherein a shackle is connected to a lifting lug 901 at the end part of the side edge of each V-shaped structure, and then the bearing outer ring raceway body 302 is hoisted out by connecting a travelling crane and a hanging strip with the shackle;
3.6) hoisting the retainer 303 out by using the travelling crane and the hanging strip;
4) the bearing inner ring raceway body of the bearing main body part 3 is separated from the main shaft 1 and detached;
the frock that needs to be equipped with has: a hoisting device (a travelling crane, a sling and a shackle), a clearance gauge, a medium frequency induction heater and a bearing roller way body hoisting tool 9;
4.1) uniformly winding a heating cable 6 of the medium-frequency induction heater on a bearing inner ring roller path body, setting the heating temperature to be 120-125 ℃, and starting heating;
4.2) in the heating process, measuring the gap value between the bearing inner ring raceway body and the main shaft 1 by using a feeler gauge, stopping heating when the gap value reaches 0.20-0.22 mm, and quickly removing the joint of the heating cable 6;
4.3) one end of 2 bearing raceway body hoisting tools 9 is respectively connected with two sides of a bearing inner ring raceway body, a shackle is connected with a lifting lug 901 at the end part of the side edge of each V-shaped structure, and then a travelling crane and a hanging strip are connected with the shackle to hoist the bearing inner ring raceway body so as to separate and disassemble the bearing inner ring raceway body from the main shaft 1;
5) the main shaft 1 is detached from a lower retainer ring 4 of the bearing;
the frock that needs to be equipped with has: a hoisting device (a travelling crane, a sling and a shackle), a check ring dismounting S-shaped lifting hook 7, a flat copper crowbar, a copper bar 8, a clearance gauge, a heat insulation wood block 5, a heat insulation base plate 10 and a medium frequency induction heater (with a heating cable 6);
5.1) isolating and cushioning between a main shaft 1 of the wind driven generator and a lower retainer ring 4 of a bearing by using a heat insulation wood block 5 (a heat insulation base plate 10 can be added according to actual requirements), uniformly winding a heating cable 6 of the medium-frequency induction heater on the outer side of the lower retainer ring 4, and then heating the lower retainer ring 4 to 85 +/-3 ℃ as shown in figure 7;
5.2) measuring the gap between the lower retainer ring 4 and the main shaft 1 by using a feeler gauge, stopping heating when the gap is unilateral 0.15-0.2 mm, quickly removing the heating cable 6, and uniformly installing 3 retainer ring detaching S-shaped lifting hooks 7 on the lower retainer ring 4 along the circumferential direction of the lower retainer ring 4; the lifting hook of the traveling crane is connected with the S-shaped lifting hook 7 for disassembling the check ring by using a hanging strip and a shackle, the lower check ring 4 is knocked by using a flat copper crowbar and a copper bar 8 to be separated from the main shaft 1, and then the lower check ring 4 is lifted to be separated from the main shaft 1 for disassembly.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that variations based on the shape and principle of the present invention should be covered within the scope of the present invention.
Claims (4)
1. A nondestructive separation and disassembly method for a main shaft and a bearing of a wind generating set is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
1) the main shaft is separated from a retainer ring on the bearing and is disassembled;
the frock that needs to be equipped with has: the lifting device, the heat insulation cushion block, the heater and the check ring are disassembled from the S-shaped lifting hook;
1.1) separating the main body part of the bearing from the upper retainer ring by using a heat insulation cushion block for separating the main body part from the upper retainer ring, uniformly winding a heating cable of a heater on the outer side of the upper retainer ring, and then heating the upper retainer ring to 85 +/-3 ℃;
1.2) measuring the gap between the upper retainer ring and the main shaft, quickly removing the heating cable when the gap is 0.15-0.2 mm, and using a plurality of retainer rings to remove the S-shaped lifting hooks and uniformly installing the S-shaped lifting hooks on the upper retainer ring along the circumferential direction of the upper retainer ring; connecting a lifting device with a plurality of retainer ring disassembling S-shaped lifting hooks, knocking an upper retainer ring to separate the upper retainer ring from a main body part of a bearing, and then lifting the upper retainer ring to separate and disassemble the upper retainer ring from a main shaft;
2) polishing a process gap of a lower bearing retainer ring;
2.1) packing and sealing the bearing to prevent grinding debris from entering an inner cavity of the bearing;
2.2) polishing a process notch for inclining the bearing outer ring roller way body on the lower retainer ring, wherein the upper row of rollers right above the process notch and the lower row of rollers opposite to the upper row of rollers can be completely exposed when the bearing outer ring roller way body presses to the process notch;
2.3) cleaning the position of the process gap and polishing scraps on the bearing;
3) disassembling a roller, a retainer and a bearing outer ring raceway body of a bearing main body part;
the frock that needs to be equipped with has: the hoisting device and the bearing roller path body hoisting tool;
3.1) pressing down the bearing outer ring roller path body towards the direction of the polished process gap to incline the bearing outer ring roller path body, so that part of the upper row of rollers and part of the lower row of rollers are completely exposed;
3.2) tapping the upper row of rollers from bottom to top along the exposed outer surface of the upper row of rollers to enable the upper row of rollers to knock off the retainer;
3.3) all the exposed upper-row rollers are to be removed, and then the exposed outer surfaces of the lower-row rollers are tapped from top to bottom to enable the lower-row rollers to be knocked off the retainer, so that all the exposed lower-row rollers are removed;
3.4) adjusting a bearing outer ring raceway body to expose the upper row of rollers and the lower row of rollers which are not removed, and returning to the step 3.2) until the rest rollers are alternately removed;
3.5) connecting one end of each bearing roller path body hoisting tool with the bearing outer ring roller path body respectively, connecting a lifting lug at the other end with a hoisting device, and hoisting the bearing outer ring roller path bodies out through the hoisting device;
3.6) connecting the lifting device with the retainer, and then lifting out the retainer through the lifting device;
4) the bearing inner ring raceway body of the bearing main body part is separated from the main shaft and detached;
the frock that needs to be equipped with has: the lifting device, the heater and the bearing roller path body lifting tool;
4.1) uniformly winding a heating cable of a heater on a bearing inner ring roller path body, setting the heating temperature to be 120-125 ℃, and starting heating;
4.2) in the heating process, measuring the gap value between the bearing inner ring raceway body and the main shaft, stopping heating when the gap value reaches 0.20-0.22 mm, and quickly removing the heating cable joint;
4.3) connecting one end of each bearing roller path body hoisting tool with the bearing inner ring roller path body respectively, connecting a lifting lug at the other end with a hoisting device, hoisting the bearing inner ring roller path body through the hoisting device, and separating and disassembling the bearing inner ring roller path body from the main shaft;
5) disassembling the main shaft and a lower bearing retainer ring;
the frock that needs to be equipped with has: the lifting device, the heat insulation cushion block, the heater and the check ring are disassembled from the S-shaped lifting hook;
5.1) separating the main shaft and a lower retainer ring of the bearing by using a heat insulation cushion block, uniformly winding a heating cable of a heater on the outer side of the lower retainer ring, and then heating the lower retainer ring to 85 +/-3 ℃;
5.2) measuring the gap between the lower retainer ring and the main shaft, stopping heating when the gap is 0.15-0.2 mm on one side, quickly removing the heating cable, and uniformly installing a plurality of retainer rings on the lower retainer ring along the circumferential direction of the lower retainer ring by detaching S-shaped lifting hooks; the lifting device is used for being connected with the S-shaped lifting hooks for disassembling the check rings, the lower check ring is knocked to be separated from the main shaft, and then the lower check ring is lifted to be separated from the main shaft for disassembling.
2. The nondestructive separation and disassembly method of the main shaft and the bearing of the wind generating set according to claim 1, characterized in that: in the step 2.2), before the gap of the polishing process is carried out, a steel base plate is padded between the lower row of rollers and the lower retainer ring to prevent the lower row of rollers from being damaged when the gap of the polishing process is polished.
3. The nondestructive separation and disassembly method of the main shaft and the bearing of the wind generating set according to claim 1, characterized in that: the bearing roller path body hoisting tool is of a V-shaped structure, and a lifting lug is arranged at the end of one side edge of the V-shaped structure.
4. The nondestructive separation and disassembly method of the main shaft and the bearing of the wind generating set according to claim 1, characterized in that: the heat insulation cushion block is a heat insulation wood cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010495533.7A CN111761295B (en) | 2020-06-03 | 2020-06-03 | Nondestructive separation and disassembly method for main shaft and bearing of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010495533.7A CN111761295B (en) | 2020-06-03 | 2020-06-03 | Nondestructive separation and disassembly method for main shaft and bearing of wind generating set |
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| CN111761295A true CN111761295A (en) | 2020-10-13 |
| CN111761295B CN111761295B (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654182A (en) * | 2022-02-28 | 2022-06-24 | 明阳智慧能源集团股份公司 | Method for replacing bearing tower of semi-direct-drive permanent magnet wind power generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654182A (en) * | 2022-02-28 | 2022-06-24 | 明阳智慧能源集团股份公司 | Method for replacing bearing tower of semi-direct-drive permanent magnet wind power generator |
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Effective date of registration: 20231212 Address after: 663000 in Qiubei Industrial Park, Qiubei County, Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province Patentee after: Wenshan Mingyang New Energy Co.,Ltd. Address before: 528437 No. 22 Torch Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: MING YANG SMART ENERGY GROUP Co.,Ltd. |