CN220673545U - Bearingless hollow shaft motor - Google Patents
Bearingless hollow shaft motor Download PDFInfo
- Publication number
- CN220673545U CN220673545U CN202321319860.2U CN202321319860U CN220673545U CN 220673545 U CN220673545 U CN 220673545U CN 202321319860 U CN202321319860 U CN 202321319860U CN 220673545 U CN220673545 U CN 220673545U
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- hollow rotor
- positioning
- hollow
- rotor
- clamping
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- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 17
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a bearingless hollow shaft motor, which belongs to the technical field of motors and comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a shell and a stator core arranged in the shell, the rotor assembly comprises a hollow rotor and magnetic steel arranged on the hollow rotor, a shaft hole for an external transmission shaft to be inserted is formed in the hollow rotor, the external transmission shaft is inserted into the shaft hole and is mutually connected with the hollow rotor, the hollow rotor is suspended in the shell in cooperation with the support of the external transmission shaft, and compared with the prior art, the hollow rotor is suspended in the shell, and the hollow rotor is replaced outside the motor by adopting the hollow rotor and the external transmission shaft, so that the bearing can be replaced or lubricated and cooled, the problems that the service life of the motor is limited by the service life of the bearing by adopting the built-in bearing in the motor in the past are solved, the difficulty of maintaining the bearing is reduced, and the transmission efficiency and the service life of the bearing are improved to a certain extent.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a bearingless hollow shaft motor.
Background
The operating life of a motor is usually determined by or affected by the life of the motor bearings. At present, the motor bearing with better quality has the common service life of about 2 ten thousand hours, and the bearing is easy to damage, which is a disadvantage of the current motor. However, replacing bearings is also a problem with current motors, so bearing damage is essentially equal to motor damage.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a bearingless hollow shaft motor.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a bearingless hollow shaft motor, includes stator module and rotor subassembly, stator module includes the shell and sets up the stator core in the shell, rotor subassembly includes hollow rotor and the magnet steel of setting on hollow rotor, is equipped with in the hollow rotor and supplies outside transmission shaft male shaft hole, and outside transmission shaft inserts in the shaft hole to interconnect with hollow rotor, hollow rotor unsettled place in the shell.
Preferably, the front end of the hollow rotor is provided with a clamping opening, the outer side of the hollow rotor is provided with a clamping screw hole penetrating through the other side of the clamping opening, a clamping bolt is locked on the clamping screw hole, and the front end of the hollow rotor is clamped on the external transmission shaft through locking the clamping bolt and tightening the clamping opening.
Preferably, the clamping opening extends to the other side of the hollow rotor, and a clearance gap is formed; an outer expansion section is arranged at the middle section of the shaft hole, and the inner diameter of the outer expansion section is larger than that of the external transmission shaft.
Preferably, the shell is provided with a clamping hole penetrating to the inner side, the clamping hole is opposite to a clamping screw hole on the hollow rotor, and a clamping bolt on the clamping screw hole can be screwed through the clamping hole.
Preferably, a sealing bolt is locked on the outer side of the clamping hole.
Preferably, the shell is provided with a positioning locking screw hole penetrating to the inner side, a positioning screw is locked on the positioning locking screw hole, and a positioning screw hole matched with the positioning screw is arranged on the outer side of the hollow rotor.
Preferably, two groups of positioning locking screw holes are arranged, and the axial directions of the two groups of positioning locking screw holes are mutually perpendicular.
Preferably, the front end of the hollow rotor is provided with a positioning convex ring, the front end of the shell is provided with a front limiting convex ring, the front limiting convex ring is opposite to the positioning convex ring, and the front end of the hollow rotor is flush with the outer side of the front limiting convex ring.
Preferably, the front end of the shell is provided with a sealing pressing groove, the inner side of the sealing pressing groove is provided with a convex positioning stop ring, and the hollow rotor is positioned on the inner side of the convex positioning stop ring.
Preferably, the bearingless hollow shaft motor further comprises a rear end positioning disk, the rear end positioning disk is coaxially connected with the rear end of the hollow rotor, a rear limiting convex ring matched with the rear end positioning disk is arranged at the rear end inside the shell, the rear end positioning disk is positioned at the inner side of the rear limiting convex ring, a gap is reserved between the outer side of the rear end positioning disk and the rear limiting convex ring, and a rear extension rod protruding outwards is arranged at the rear end of the rear end positioning disk.
The beneficial effects of the utility model are as follows: compared with the prior art, through canceling the built-in bearing of motor, adopt hollow rotor, the unsettled setting of hollow rotor in the motor has been realized to the cooperation outside transmission shaft, can change the bearing in the motor outside, perhaps lubricate and cool off the bearing, solved in the past the motor adopts built-in bearing, the motor life-span is limited by bearing life's problem, reduced the degree of difficulty that the bearing maintenance was maintained, improved transmission efficiency and bearing's life to a certain extent.
Drawings
FIG. 1 is a perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a partially exploded view of an embodiment of the present utility model;
FIG. 5 is a perspective view of a rotor assembly according to an embodiment of the present utility model;
FIG. 6 is a second perspective view of a rotor assembly according to an embodiment of the present utility model;
fig. 7 is a perspective view of a hollow rotor in an embodiment of the present utility model.
In the figure, 10, a housing; 11. clamping the open hole; 12. a sealing bolt; 13. positioning and locking the screw holes; 14. a set screw; 15. a front limit convex ring; 16. sealing and pressing the groove; 17. a convex positioning stop ring; 18. a rear limit convex ring; 20. a stator core; 30. a hollow rotor; 31. a fixing surface; 32. a shaft hole; 33. an outer expansion section; 34. an extension; 35. a clamping opening; 36. a clearance gap; 37. clamping the screw hole; 38. positioning screw holes; 39. positioning the convex ring; 40. magnetic steel; 50. a rear end positioning disk; 51. and a rear extension rod.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-7, the bearingless hollow shaft motor provided by the utility model comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a shell 10 and a stator iron core 20 arranged in the shell 10, the rotor assembly comprises a hollow rotor 30 and magnetic steels 40 arranged on the hollow rotor 30, a plurality of fixing surfaces 31 are circumferentially arranged on the outer side of the hollow rotor 30, a plurality of groups of magnetic steels 40 are arranged on the fixing surfaces 31, a shaft hole 32 for inserting an external transmission shaft is arranged in the hollow rotor 30, the external transmission shaft is inserted into the shaft hole 32 and is connected with the hollow rotor 30, and the hollow rotor 30 is suspended in the shell 10 in cooperation with the support of the external transmission shaft, namely, the hollow rotor 30 is not contacted with the stator iron core 20 and the shell 10.
Specifically, the inside bearing that does not set up of motor, during the installation, insert the external transmission shaft of the external equipment that will drive in shaft hole 32 to fix each other with hollow rotor 30, wherein, only need set up the bearing on external equipment and come the smooth and easy rotation of external transmission shaft and hollow rotor 30 can be guaranteed, adopt this setting up mode, can dismantle the change to the bearing more convenient, promptly, broken in the past motor and adopted built-in bearing, bearing life to motor life restriction, simultaneously, adopt this setting up mode, can effectually improve the convenience of lubrication and cooling to the bearing, can prolong the life of bearing to a certain extent, in addition, with external transmission shaft lug connection hollow rotor 30, can improve transmission efficiency.
Compared with the prior art, through canceling the built-in bearing of motor, adopt hollow rotor 30, the unsettled setting of hollow rotor 30 in the motor has been realized to the cooperation outside transmission shaft, can change the bearing in the motor outside, perhaps lubricate and cool off the bearing, solved in the past the motor adopts built-in bearing, the motor life-span is limited by bearing life's problem, reduced the degree of difficulty of bearing maintenance, improved transmission efficiency and bearing's life to a certain extent.
Further, in order to realize the quick connection between the external transmission shaft and the hollow rotor 30, the front end of the hollow rotor 30 is provided with an extension part 34, the extension part 34 of the front end of the hollow rotor 30 is provided with a clamping opening 35, the outer side of the hollow rotor 30 is provided with a clamping screw hole 37 penetrating through the other side of the clamping opening 35, and the clamping screw hole 37 is locked with a clamping bolt, wherein after the external transmission shaft is inserted into the shaft hole 32, the front end of the hollow rotor 30 can be clamped on the external transmission shaft by locking the clamping bolt and tightening the clamping opening 35, namely, the external transmission shaft and the hollow rotor 30 can be quickly connected only by locking the clamping bolt, and the quick connection is more convenient when external equipment is connected.
Further, when the external transmission shaft is connected, in order to enable the front end of the shaft hole 32 of the hollow rotor 30 to be tightly held on the external transmission shaft, the clamping opening 35 extends to the other side of the hollow rotor 30, a clearance gap 36 is formed, and by arranging the clearance gap 36, the extension part 34 at the front end of the hollow rotor 30 has a larger holding amount when the clamping bolt is locked, namely, the extension part 34 at the front end of the hollow rotor 30 can be tightly held on the external transmission shaft; in order to reduce the difficulty of the external transmission shaft in inserting the shaft hole 32 on the premise of ensuring the connection stability of the external transmission shaft and the shaft hole 32, the middle section of the shaft hole 32 is provided with an external expansion section 33, the inner diameter of the external expansion section 33 is larger than that of the external transmission shaft, namely, the external expansion section 33 in the shaft hole 32 does not form resistance to the external transmission shaft in the process of inserting the external transmission shaft, and the external transmission shaft is respectively connected with the front section and the rear section of the shaft hole 32 after the external transmission shaft is completely inserted into the shaft hole 32.
Further, in order to provide compactness of the motor, the front section of the hollow rotor 30 does not protrude outside the housing 10, that is, the clamping screw hole 37 on the hollow rotor 30 is located inside the housing 10, the housing 10 is provided with a clamping hole 11 penetrating to the inner side, the clamping hole 11 is opposite to the clamping screw hole 37 on the hollow rotor 30, the clamping hole 11 is penetrated, the clamping bolt on the clamping screw hole 37 can be screwed tightly, the sealing bolt 12 is locked on the outer side of the clamping hole 11, and after the sealing bolt 12 is locked, the clamping hole 11 can be sealed.
Further, the casing 10 is provided with positioning and locking screw holes 13 penetrating to the inner side, the positioning and locking screw holes 13 are provided with two groups, the axial directions of the two groups of positioning and locking screw holes 13 are mutually perpendicular, the positioning and locking screw holes 13 are locked with positioning screws 14, the outer side of the hollow rotor 30 is provided with positioning screw holes 38 matched with the positioning screws 14, and in the motor non-working state, the positioning screws 14 can be rotated inwards by screwing, and the front section of the positioning and locking screw holes can be locked at the positioning screw holes 38 or propped against the outer side of the hollow rotor 30, so that the hollow rotor 30 is limited and fixed, and the hollow rotor 30 is prevented from shifting.
Further, the extension 34 at the front end of the hollow rotor 30 is provided with a positioning convex ring 39, the positioning screw hole 38 is positioned on the positioning convex ring 39, the front end of the housing 10 is provided with a front limiting convex ring 15, the front limiting convex ring 15 is opposite to the positioning convex ring 39, the front end of the hollow rotor 30 is flush with the outer side of the front limiting convex ring 15, a gap is reserved between the front limiting convex ring 15 and the positioning convex ring 39, and the hollow rotor 30 can be better limited or fixed by matching with the positioning convex ring 39, so that the hollow rotor 30 is prevented from being deviated.
Further, in order to cooperate with the installation of the motor, the front end of the shell 10 is provided with a sealing pressing groove 16, a sealing ring is arranged in the sealing pressing groove 16, the inner side of the sealing pressing groove 16 is provided with a convex positioning stop ring 17, the hollow rotor 30 is positioned on the inner side of the convex positioning stop ring 17, when the motor is installed on external equipment, the front end of the shell 10 is connected with the external equipment, after locking a fixing bolt, the sealing pressing groove 16 and the sealing ring are cooperated, so that good sealing can be formed at the connection part of the motor and the external equipment, wherein the convex positioning stop ring 17 can be embedded on the external equipment to position the installation of the motor, and the tightness of the installation is ensured.
Further, the bearingless hollow shaft motor further comprises a rear end positioning disk 50, the rear end positioning disk is coaxially connected with the rear end of the hollow rotor 30, a rear limiting convex ring 18 matched with the rear end positioning disk 50 is arranged at the rear end inside the shell 10, the rear end positioning disk 50 is positioned at the inner side of the rear limiting convex ring 18, a gap is reserved between the outer side of the rear end positioning disk 50 and the rear limiting convex ring 18, the rear end of the hollow rotor 30 can be limited through the matching of the rear end positioning disk 50 and the rear limiting convex ring 18, a rear extension rod 51 protruding outwards is arranged at the rear end of the rear end positioning disk 50, and the rear extension rod 51 is arranged and can be matched for monitoring the operation parameters of the motor.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (7)
1. The bearingless hollow shaft motor is characterized by comprising a stator assembly and a rotor assembly, wherein the stator assembly comprises a shell (10) and a stator iron core (20) arranged in the shell (10), the rotor assembly comprises a hollow rotor (30) and magnetic steel (40) arranged on the hollow rotor (30), a shaft hole (32) for inserting an external transmission shaft is formed in the hollow rotor (30), the external transmission shaft is inserted into the shaft hole (32) and is connected with the hollow rotor (30), and the hollow rotor (30) is suspended in the shell (10);
the front end of the hollow rotor (30) is provided with a clamping opening (35), the outer side of the hollow rotor (30) is provided with a clamping screw hole (37) penetrating to the other side of the clamping opening (35), the clamping screw hole (37) is locked with a clamping bolt, and the front end of the hollow rotor (30) is clamped on an external transmission shaft through locking the clamping bolt and tightening the clamping opening (35);
the clamping opening (35) extends to the other side of the hollow rotor (30) and is provided with a clearance gap (36); an outer expansion section (33) is arranged at the middle section of the shaft hole (32), and the inner diameter of the outer expansion section (33) is larger than that of the external transmission shaft;
the front end of the shell (10) is provided with a sealing pressing groove (16), the inner side of the sealing pressing groove (16) is provided with a convex positioning stop ring (17), and the hollow rotor (30) is positioned on the inner side of the convex positioning stop ring (17).
2. The bearingless hollow shaft motor according to claim 1, wherein the housing (10) is provided with a clamping opening (11) penetrating to the inner side, the clamping opening (11) is opposite to a clamping screw hole (37) on the hollow rotor (30), and a clamping bolt on the clamping screw hole (37) can be screwed through the clamping opening (11).
3. A bearingless hollow shaft motor according to claim 2, characterized in that the clamping aperture (11) is externally locked with a sealing bolt (12).
4. The bearingless hollow shaft motor according to claim 1, wherein the shell (10) is provided with a positioning locking screw hole (13) penetrating to the inner side, the positioning locking screw hole (13) is locked with a positioning screw (14), and the outer side of the hollow rotor (30) is provided with a positioning screw hole (38) matched with the positioning screw (14).
5. The bearingless hollow shaft motor according to claim 4, wherein the positioning locking screw holes (13) are provided with two groups, and the axial directions of the two groups of positioning locking screw holes (13) are mutually perpendicular.
6. The bearingless hollow shaft motor of claim 1, wherein the front end of the hollow rotor (30) is provided with a positioning convex ring (39), the front end of the housing (10) is provided with a front limiting convex ring (15), the front limiting convex ring (15) is opposite to the positioning convex ring (39), and the front end of the hollow rotor (30) is flush with the outer side of the front limiting convex ring (15).
7. The bearingless hollow shaft motor of claim 1, further comprising a rear end positioning disk (50), wherein the rear end positioning disk is coaxially connected with the rear end of the hollow rotor (30), a rear limit convex ring (18) matched with the rear end positioning disk (50) is arranged at the rear end inside the shell (10), the rear end positioning disk (50) is positioned at the inner side of the rear limit convex ring (18), a gap is reserved between the outer side of the rear end positioning disk (50) and the rear limit convex ring (18), and a rear extension rod (51) protruding outwards is arranged at the rear end of the rear end positioning disk (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319860.2U CN220673545U (en) | 2023-05-29 | 2023-05-29 | Bearingless hollow shaft motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319860.2U CN220673545U (en) | 2023-05-29 | 2023-05-29 | Bearingless hollow shaft motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220673545U true CN220673545U (en) | 2024-03-26 |
Family
ID=90343363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321319860.2U Active CN220673545U (en) | 2023-05-29 | 2023-05-29 | Bearingless hollow shaft motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220673545U (en) |
-
2023
- 2023-05-29 CN CN202321319860.2U patent/CN220673545U/en active Active
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