CN219740119U - Combined bearing insulation and dynamic balance device for outer rotor electric roller - Google Patents
Combined bearing insulation and dynamic balance device for outer rotor electric roller Download PDFInfo
- Publication number
- CN219740119U CN219740119U CN202320953730.8U CN202320953730U CN219740119U CN 219740119 U CN219740119 U CN 219740119U CN 202320953730 U CN202320953730 U CN 202320953730U CN 219740119 U CN219740119 U CN 219740119U
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- China
- Prior art keywords
- bearing
- labyrinth seal
- insulating
- insulation
- end cover
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- 238000009413 insulation Methods 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 33
- 238000013461 design Methods 0.000 abstract description 9
- 230000001915 proofreading effect Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000004519 grease Substances 0.000 description 6
- 238000012937 correction Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A combined bearing insulation and dynamic balance device for an outer rotor electric roller comprises: insulating seal end cover (1), interior labyrinth seal (2), bearing (3), bearing enclosing cover (4), outer labyrinth seal (5), balancing piece mounting groove (6), insulating liner (7), bearing housing (8), labyrinth seal groove (9), insulating liner (10), insulating seal end cover (1) have bearing shelves (30), bearing shelves (30) internally mounted insulating liner (7), bearing shelves (30) tip adhesion insulating liner (10), bearing shelves (30) connect bearing housing (8) through insulating liner (7), bearing housing (8) connect bearing (3), main shaft (31) are connected to bearing (3), insulating seal end cover (1) outside is provided with balancing piece mounting groove (6), through design integration insulating seal end cover and combine inside and outside both ends labyrinth seal, multiple functions such as bearing insulation, dynamic balance proofreading and labyrinth seal have been realized.
Description
Technical Field
The utility model relates to the field of motors, in particular to a combined bearing insulation and dynamic balance device for an outer rotor electric roller.
Background
For a conventional motor, three methods for isolating shaft current are mainly used, and one method is to directly install an insulating bearing; the second method is that the conducting path of the shaft current is changed through the conducting ring and does not pass through the bearings at the two ends, so that the service life of the bearings is prolonged; the last method is to add an insulating layer on the bearing cover through the insulating end cover to block the current conduction loop of the shaft, thereby prolonging the service life of the bearing.
The service life of the insulating bearing has severe requirements on static load and load requirements of a shafting. For the electric roller, the dead load of the whole shaft system is large, the load is uneven load such as a belt conveyor and a winch, and the service life of the insulating bearing is short. The conducting ring is continuously worn when the motor runs, a large amount of carbon deposition is generated in the motor, and the difficulty of daily maintenance and the use cost of a user are increased while the insulation reliability is influenced. For motorized pulley, therefore, the most suitable bearing insulation is the use of an insulating end cap. However, due to the structural difference between the rotor and the common motor, the special arrangement of the bearing oil injection and discharge system is that if an effective sealing mode is not adopted, lubricating oil easily enters the interior of the roller, so that the insulating end cover and the corresponding sealing device are required to be designed separately.
The dynamic balance verification of the conventional motor rotor is generally realized by adding a balance weight on a rotor end ring or a balance ring by adopting a weight increasing method. However, as the rotor of the motorized pulley directly drags the load to rotate as a structural member while transmitting the energy of the armature, the dynamic balance check is performed in the rotor, so that the assembly of the permanent magnets is affected, and the inner and outer covers of the end cover bearing rotate along with the rotor when the motorized pulley operates, so that the balance accuracy is affected.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the combined bearing insulation and dynamic balance device for the outer rotor electric roller, which realizes multiple functions of bearing insulation, dynamic balance correction and the like of the electric roller, improves the running reliability of the electric roller, and reduces the maintenance difficulty and the maintenance cost.
The utility model aims at realizing the following technical scheme:
a combined bearing insulation and dynamic balance device for an outer rotor electric roller comprises: the bearing comprises an insulating sealing end cover, an inner labyrinth seal, a bearing outer cover, an outer labyrinth seal, a balance block mounting groove, an insulating liner, a bearing sleeve, a labyrinth seal groove and an insulating liner, wherein the insulating sealing end cover is provided with a bearing retainer, the end part of the bearing retainer is adhered with the insulating liner, the inside of the bearing retainer is provided with the insulating liner, the bearing retainer is connected with the bearing sleeve through the insulating liner, the bearing sleeve is connected with a bearing, the bearing is connected with a main shaft, the outer part of the insulating sealing end cover is provided with the balance block mounting groove, the inner side of the insulating sealing end cover is provided with the labyrinth seal groove, the labyrinth seal groove is connected with the inner labyrinth seal in a matched manner, the labyrinth seal groove is relatively rotated, the inner labyrinth seal is in interference connection with the main shaft, the bearing outer cover is connected with the outer labyrinth seal in an interference manner, and the bearing outer cover is relatively rotated to form a labyrinth seal
Advantageous effects
1. According to the utility model, aiming at the condition that the outer rotor electric roller is easy to generate shaft current and the dynamic balance of the rotor is difficult to correct under the drive of the frequency converter, the integrated insulation sealing end cover is designed and combined with the labyrinth sealing rings at the inner end and the outer end, so that the functions of bearing insulation, dynamic balance correction, labyrinth sealing and the like are realized.
2. According to the design thought of the utility model, the bearing insulating layer is arranged on the bearing cover, and the balance weight mounting groove is additionally arranged, so that the dynamic balance of the electric roller can be effectively checked while the conduction path of the shaft current of the electric roller is isolated. The technical scheme has the advantages that the insulating bearing seat is small in geometric dimension, the labyrinth seal groove is convenient to process and assemble, interference influence of end cover positioning dimension processing errors on the labyrinth seal groove during assembly is not needed to be considered, and therefore the labyrinth gap can be designed to be smaller, and the labyrinth seal groove has a better sealing effect.
3. The utility model can realize the insulation function of bearing shaft current and the dynamic balance correction of the electric roller, and effectively simplifies the design flow and processing cost of the electric roller in structure for realizing the functions.
Drawings
FIG. 1 is a schematic diagram of a combined bearing insulation and dynamic balance device for an outer rotor motorized pulley according to the present utility model;
FIG. 2 is a schematic structural view of an insulating seal end cap;
FIG. 3 is a cross-sectional view of an insulating seal end cap;
FIG. 4 is a schematic diagram of a split design of the present utility model;
FIG. 5 is a schematic view of the structure of an insulated bearing housing;
FIG. 6 is a cross-sectional view of an insulated bearing housing;
FIG. 7 is a schematic view of the structure of the insulating seal outer end cap of the present utility model;
FIG. 8 is a cross-sectional view of an insulating seal outer end cap of the present utility model;
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples:
examples
Specifically, as shown in fig. 1, the combined bearing insulation and dynamic balance device for an outer rotor motorized pulley includes: the sealing device comprises an insulating sealing end cover 1, an inner labyrinth sealing ring 2, an outer labyrinth sealing ring 5, a bearing outer cover 4 and a bearing 3. The insulating sealing end cover 1 is shown in fig. 2 and 3, an integrated design is adopted, the bearing block 30 is provided with the insulating gasket 7 and is in interference fit with the bearing sleeve 8, and the end part of the bearing block is also adhered with the insulating gasket 10, so that the current conduction path of the shaft is effectively blocked. The outside design of insulating seal end cover 1 has balancing piece mounting groove 6 for the proofreading of dynamic balance, and insulating seal end cover 1 inboard design has labyrinth seal slot 9, uses with interior labyrinth seal 2 cooperation, plays the inside effect of isolated bearing grease entering motorized pulley, realizes multiple functions such as bearing insulation, dynamic balance proofreading and labyrinth seal.
The outer labyrinth seal ring 5 is installed on the main shaft in an interference mode, and the bearing outer cover 4 is matched with the outer labyrinth seal ring 5 to form labyrinth seal. The inner and outer labyrinth seals of the motor of the electric roller are used for effectively preventing bearing lubricating grease from leaking to the outer side of the motor.
The bearings 3 at the two ends of the electric roller adopt self-aligning roller bearings, and the use allowance of the load is fully considered when the design and the selection are carried out. The bearing and the main shaft are connected in a matched mode, and the matching can be interference fit or transition fit. Gaps are reserved between the bearing 3 and the inner labyrinth seal ring 2 and between the bearing 3 and the bearing outer cover 4, so that smooth oil passages are ensured.
The insulation and dynamic balance of the electric roller bearing can also be realized by adopting another technical scheme, namely, a mode of carrying out split design on the bearing insulation seat 16 and the insulation sealing outer end cover 11 is adopted, as shown in fig. 4.
The insulating bearing seat 16 and the bearing block 30 are still installed by adopting the interference fit between the insulating gasket 7 and the bearing sleeve 8, and the end part of the bearing seat is adhered with the insulating gasket 10, so that the insulating effect on shaft current is realized. The labyrinth seal groove 9 is designed to be matched with the inner labyrinth seal 2, and the outer part of the insulating seal end cover 1 still adopts the bearing outer cover 4 and the outer labyrinth seal 5 to realize the sealing effect on the bearing grease of the electric roller, as shown in figures 5 and 6.
The end cover 11 is provided with a balance block mounting groove 6 and is assembled with the insulating bearing seat 16 by adopting a bolt spigot, so that the dynamic balance checking effect with the outer rotor electric roller is realized, as shown in fig. 7 and 8.
The technical scheme has the advantages that the insulating bearing seat is small in geometric dimension, the labyrinth seal groove is convenient to process and assemble, interference influence of end cover positioning dimension processing errors on the labyrinth seal groove during assembly is not needed to be considered, and therefore the labyrinth gap can be designed to be smaller, and the labyrinth seal groove has a better sealing effect.
Examples
A combined bearing insulation and dynamic balance device for an outer rotor electric roller comprises: the bearing comprises an insulating sealing end cover 1, an inner labyrinth seal 2, a bearing 3, a bearing outer cover 4, an outer labyrinth seal 5, a balance block mounting groove 6, an insulating gasket 7, a bearing sleeve 8, a labyrinth seal groove 9 and an insulating gasket 10, wherein the insulating sealing end cover 1 is provided with a bearing retainer 30, the end part of the bearing retainer 30 is adhered with the insulating gasket 10, the insulating gasket 7 is internally arranged in the bearing retainer 30, the bearing retainer 30 is connected with the bearing sleeve 8 through the insulating gasket 7, the bearing sleeve 8 is connected with the bearing 3, the bearing 3 is connected with a main shaft 31, the balance block mounting groove 6 is arranged outside the insulating sealing end cover 1, the labyrinth seal groove 9 is arranged on the inner side of the insulating sealing end cover 1, the labyrinth seal groove 9 is connected with the inner labyrinth seal 2, the labyrinth seal groove 9 is matched with the inner labyrinth seal 2 for use, the inner labyrinth seal 2 is in relative rotation, the bearing outer cover 4 is connected with the insulating sealing end cover 1 through bolts, the outer labyrinth seal 5 is in interference fit on the main shaft, the bearing outer cover 4 is connected with the outer labyrinth seal 5 for use, and the outer cover 4 is in relative rotation to form labyrinth seal.
Examples
The combined bearing insulation and dynamic balance device for the outer rotor electric roller mainly realizes the insulation function of a bearing through an insulation sealing end cover, and the insulation sealing end cover is provided with a dynamic balance block mounting groove for dynamic balance correction of the electric roller. Meanwhile, the motor side is provided with a labyrinth sealing ring for sealing lubricating grease of the rolling bearing, so that the lubricating grease is prevented from entering the motor. The motor is externally provided with a labyrinth seal formed by a sealing ring and a bearing outer cover, so that the sealing effect of bearing grease is completed.
Preferably, the insulating seal end cover 1 comprises an insulating seal outer end cover 11 and an insulating bearing seat 16, wherein the insulating seal outer end cover 11 is internally connected with the insulating bearing seat 16, the insulating bearing seat 16 is provided with a bearing block 30, and bolts penetrate through the bearing outer cover 4 and the insulating seal outer end cover 11 to be connected with the insulating bearing seat 16.
Preferably, gaps are left between the bearing 3 and the inner labyrinth seal 2 and between the bearing 3 and the bearing outer cover 4. Thereby ensuring smooth oil passage.
Preferably, bearings 3 at both ends of the outer rotor motorized pulley adopt self-aligning roller bearings.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims (4)
1. A combined bearing insulation and dynamic balance device for an outer rotor electric roller is characterized by comprising the following components: insulating seal end cover (1), inner labyrinth seal (2), bearing (3), bearing enclosing cover (4), outer labyrinth seal (5), balancing piece mounting groove (6), insulating liner (7), bearing housing (8), labyrinth seal groove (9), insulating liner (10), insulating seal end cover (1) has bearing shelves (30), bearing shelves (30) internally mounted insulating liner (7), bearing shelves (30) tip adhesion insulating liner (10), bearing shelves (30) connect bearing housing (8) through insulating liner (7), bearing housing (8) connect bearing (3), main shaft (31) are connected to bearing (3), insulating seal end cover (1) outside is provided with balancing piece mounting groove (6), insulating seal end cover (1) inboard is provided with labyrinth seal groove (9), labyrinth seal groove (9) connect inner labyrinth seal (2), labyrinth seal groove (9) are used with inner labyrinth seal (2) cooperation, inner labyrinth seal (2) interference connection main shaft (31), outer labyrinth seal (5) interference fit is on the main shaft, bearing enclosing cover (4) pass through bolted connection insulating seal end cover (1), outer lid (4) are connected to outer labyrinth seal (5), the bearing outer cover (4) is matched with the outer labyrinth seal ring (5) to form labyrinth seal.
2. The combined bearing insulation and dynamic balance device for the outer rotor motorized pulley according to claim 1 is characterized in that the insulation sealing end cover (1) comprises an insulation sealing outer end cover (11) and an insulation bearing seat (16), the insulation sealing outer end cover (11) is internally connected with the insulation bearing seat (16), the insulation bearing seat (16) is provided with a bearing retainer (30), and bolts penetrate through the bearing outer cover (4) and the insulation sealing outer end cover (11) to be connected with the insulation bearing seat (16).
3. The combined bearing insulation and dynamic balance device for the outer rotor motorized pulley according to claim 2 is characterized in that clearances are reserved between the bearing (3) and the inner labyrinth seal (2) and between the bearing (3) and the bearing outer cover (4).
4. The combined bearing insulation and dynamic balance device for the outer rotor motorized pulley according to claim 3 is characterized in that the bearings (3) at the two ends of the outer rotor motorized pulley are self-aligning roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320953730.8U CN219740119U (en) | 2023-04-25 | 2023-04-25 | Combined bearing insulation and dynamic balance device for outer rotor electric roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320953730.8U CN219740119U (en) | 2023-04-25 | 2023-04-25 | Combined bearing insulation and dynamic balance device for outer rotor electric roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219740119U true CN219740119U (en) | 2023-09-22 |
Family
ID=88055989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320953730.8U Active CN219740119U (en) | 2023-04-25 | 2023-04-25 | Combined bearing insulation and dynamic balance device for outer rotor electric roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219740119U (en) |
-
2023
- 2023-04-25 CN CN202320953730.8U patent/CN219740119U/en active Active
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| GR01 | Patent grant |