CN114696532A - Special speed reducing motor integrated structure for extruder - Google Patents
Special speed reducing motor integrated structure for extruder Download PDFInfo
- Publication number
- CN114696532A CN114696532A CN202210204830.0A CN202210204830A CN114696532A CN 114696532 A CN114696532 A CN 114696532A CN 202210204830 A CN202210204830 A CN 202210204830A CN 114696532 A CN114696532 A CN 114696532A
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- China
- Prior art keywords
- motor
- extruder
- rotor
- shaft
- speed reducing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a special speed reducing motor integrated structure for an extruder, which comprises: the motor set comprises a rotor and a stator; the speed reduction group comprises a speed reduction gear set, a shaft and an output shaft; the motor group is arranged in the motor cavity, the speed reduction group is arranged in the speed reduction cavity, the speed reduction group is connected with the rotor through a shaft, and the output shaft extends out of the shell; the structure is ingenious, and the energy transmission loss is small; the device is suitable for various speed working conditions; the vibration is small, and the noise is low; effectively avoiding the problem of oil leakage.
Description
Technical Field
The invention relates to a speed reducing motor, in particular to a speed reducing motor integrated structure special for an extruder.
Background
The power assemblies used by the current domestic and foreign extrusion equipment are divided into the following two types:
1. motor direct drive power (without reducer) device: its advantages are simple structure and low vibration and noise. The defects that the direct drive motor has huge cost (especially the extruder is generally driven by ultra-large torque), and the failure rate of the motor is high;
2. power assembly of alternating current motor + speed reducer (motor and speed reducer are connected through coupling): its advantages are moderate cost and high market share. The disadvantage is that the oil leakage is easy to happen at the input shaft side of the speed reducer due to high rotating speed when the rotating speed exceeds 1500 rpm. And the shaft seal at the input shaft of the speed reducer causes large friction heat between the shaft and the sealing ring, on one hand, extra energy loss is caused, on the other hand, the lubricating oil temperature rises again, the damage of the shaft seal is accelerated, the leaked oil becomes a common pain point of the reduction gearbox of the extruder, and in the assembling, particularly the maintaining process of the motor, the reduction gearbox and the coupling, the coaxiality is difficult to ensure, and the vibration noise is obviously increased during the middle-high speed operation.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the related art. Therefore, the invention provides an integrated structure of a special speed reducing motor for an extruder.
In order to achieve the purpose, the technical scheme of the invention is as follows:
according to the embodiment of the first aspect of the invention, the integrated structure of the speed reducing motor special for the extruder comprises:
a motor assembly including a rotor and a stator;
a reduction set comprising a reduction gear set, a shaft and an output shaft;
a housing, be equipped with motor chamber and the speed reduction chamber that communicates each other in the casing, the motor chamber with speed reduction chamber structure as an organic whole or fit structure, the motor unit is installed the motor intracavity, the speed reduction unit is installed in the speed reduction intracavity, the rotor with same one is shared to speed reduction gear set's first order gear the axle.
The special speed reducing motor integrated structure for the extruder provided by the embodiment of the invention at least has the following beneficial effects: the structure is ingenious, and the energy transmission loss is small; the device is suitable for various speed working conditions; the vibration is small, and the noise is low; effectively avoiding the problem of oil leakage.
According to some embodiments of the invention, a boss is arranged on a wall of the motor cavity adjacent to the speed reduction cavity, a shaft section of the shaft passing through the boss is rotatably connected to the boss through at least one bearing, and one end of the shaft passing through the first-stage gear is mounted in the speed reduction cavity through a bearing.
According to some embodiments of the invention, the boss protrudes towards the motor block into the motor cavity and against the rotor.
According to some embodiments of the invention, the bearing mounted on the boss is mounted adjacent to the rotor.
According to some embodiments of the invention, the shaft section of the shaft passing through the boss is rotatably connected to the boss by two of the bearings.
According to some embodiments of the invention, one end of the shaft is bearing-mounted in the speed reduction chamber through the rotor.
According to some embodiments of the invention, an end of the shaft extends into the rotor such that the rotor is mounted in the motor cavity via the shaft in a bearingless suspension.
According to some embodiments of the present invention, the housing is provided with a lubricant flowing in the motor cavity and the speed reduction cavity, and the motor assembly and the speed reduction assembly are immersed in the lubricant.
According to some embodiments of the invention, the conductive windings of the stator are immersed in lubricating oil.
According to some embodiments of the invention, the stator has a distributed flow path around its outer circumference.
According to some embodiments of the invention, the cooling mechanism further comprises a cooling mechanism connected to the outside of the housing, the cooling mechanism comprises a circulation pipe, a circulation oil pump and a cooler, the circulation oil pump and the cooler are mounted on the circulation pipe, one end of the circulation pipe is communicated with the motor cavity, and the other end of the circulation pipe is communicated with the speed reduction cavity.
According to some embodiments of the invention, the rotor is a permanent magnet rotor or an asynchronous rotor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic view of another embodiment of the present invention;
FIG. 4 is a schematic view of another embodiment of the present invention;
fig. 5 is a schematic view of another embodiment of the present invention.
Reference numerals: a rotor 110; a stator 120; distributed runners 121; a reduction gear set 210; a first-stage gear 211; a shaft 220; an output shaft 230; a housing 300; a chamber wall 301; a motor cavity 310; a deceleration chamber 320; a boss 330; a bearing 400; a circulation pipe 510; a circulating oil pump 520; a cooler 530.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The invention relates to a special speed reducing motor integrated structure for an extruder, which comprises a motor set, a speed reducing set and a shell 300.
As shown in fig. 1, at least two cavities are respectively disposed in the cavity, including a motor cavity 310 and a deceleration cavity 320, the motor cavity 310 is communicated with the deceleration cavity 320, and the motor cavity 310 and the deceleration cavity 320 are of an integrated structure or a combined structure. As shown in fig. 2, the integrated structure is that the motor cavity 310 and the deceleration cavity 320 are integrally formed in the housing 300; as shown in fig. 1, the combined structure is that the corresponding parts of the motor chamber 310 and the deceleration chamber 320 are mutually assembled before assembly, and the two parts form the housing 300 through sealing assembly. Mounted within the motor cavity 310 is a motor assembly that includes a stator 120 and a rotor 110. Positioned and fixed within the motor cavity 310. The reduction group is installed in the reduction chamber 320, and the reduction group includes the reduction gear set 210, the shaft 220 and the output shaft 230, in this embodiment, the output shaft 230 is coaxially connected with the final gear of the reduction gear set 210, and one end of the output shaft 230 extends out of the housing 300. The first stage gear 211 located in the reduction chamber 320 shares the same shaft 220 as the rotor 110 located in the motor chamber 310. The shaft 220 serves as both a drive shaft for the rotor 110 and the first stage gear 211 of the reduction gear set 210. The motor set performs transmission speed reduction through the shaft 220 and the speed reduction gear set 210, and after speed reduction, the motor set transmits extrusion screw load and the like which are input into the extruder from external equipment through the output shaft 230.
The motor set and the speed reducing set are integrated in the shell 300, the motor set and the speed reducing set are directly connected and driven through the same shaft 220, connection and installation of a coupler are avoided, the transmission of the motor set and the speed reducing set only needs to guarantee the self-coaxiality of the shaft 220, the absolute coaxiality of a rotor of the motor set and a first-stage gear of the speed reducing set is guaranteed, the running stability of the speed reducing motor is effectively improved, the speed reducing motor can be suitable for various speed environments, and the defects of vibration noise and the like caused by different axialities in connection of two or more shafts are perfectly overcome; the overall structure is ingenious and simple, the energy transmission loss is small, and the difficult problems of poor high-speed axial rotation sealing of the traditional speed reducer and the like are solved.
In this embodiment, in the reduction gear set 210, except for the shaft section of the output shaft 230 extending out of the housing 300, the shaft section is mounted on the housing 300 through the bearing 400, and the bearings 400 corresponding to the rotating shafts of the other gears are all disposed in the reduction cavity 320, except for the portion of the output shaft 230 with low rotation speed extending out of the housing 300, other middle and high speed shafts do not need to be sealed, so that the sealing structure required for rotational connection can be reduced, and the oil leakage of the reduction cavity 320 is greatly reduced. Among other things, the support structure for rotor 110 in motor cavity 310 may take many forms. As shown in fig. 1 to 5, a chamber wall 301 is provided between the motor chamber 310 and the deceleration chamber 320, and an opening may be provided on the chamber wall 301 to communicate the deceleration chamber 320 with the motor chamber 310. The side of the cavity wall 301 facing the motor cavity 310 is provided with a boss 330, and the boss 330 may protrude toward the motor set. The shaft 220 passes through the boss 330, a section of the shaft 220 corresponding to the boss 330 is mounted on the boss 330 by at least one bearing 400, and one end of the shaft 220 near the reduction gear set 210 is mounted in the reduction chamber 320 by the bearing 400. The shaft 220 is supported by the bearing 400 through at least one end of the shaft section corresponding to the boss 330, and the structure can effectively improve the supporting strength of the rotor 110 of the motor set. Specifically, when the rotor 110 of the motor assembly has a small volume, as shown in fig. 4 and 5, only one bearing 400 may be disposed at the shaft section of the shaft 220 corresponding to the boss 330. Preferably, the bearing 400 is mounted on the boss 330 near the rotor 110, and the distance between the bearing 400 and the rotor 110 is reduced, so that the shaft 220 and the rotor 110 are more stably connected. When the rotor 110 of the motor assembly is large in size, as shown in fig. 1 and 2, two bearings 400 are disposed at the shaft section of the shaft 220 located in the motor cavity 310, and the stability of the shaft section of the shaft 220 between the motor assembly and the speed reduction assembly is improved by using the two bearings 400.
The first-stage gear 211 in the speed reducing cavity 320 and the rotor 110 in the motor cavity 310 share the same shaft 220, so that a coupling between a conventional alternating current motor and a speed reducer is omitted, and the size of the speed reducing motor is reduced.
In some embodiments of the present invention, one end of the shaft 220 extending into the motor cavity 310 is connected to the rotor 110, as shown in fig. 4, after the end of the shaft 220 connected to the rotor 110 passes through the rotor 110, the end is connected to the motor cavity 310 through a bearing 400, that is, both ends and the middle of the shaft 220 are rotatably connected to the housing 300 by the bearing 400, so as to improve the stability of the shaft 220 during rotation. As shown in fig. 1, the bearing 400 is not disposed at the end of the shaft 220 connected to the rotor 110, and the shaft 220 is supported by the bearing 400 only through the shaft section connected to the boss 330 and the end connected to the decelerating cavity 320, which is equivalent to the fact that the rotor 110 of the motor assembly is suspended in the motor cavity 310 through the shaft 220, so that the installation without the bearing 400 is realized, the space occupation of the motor assembly is reduced, and the volume of the motor cavity 310 can be reduced.
In some embodiments of the present invention, the motor chamber 310 and the deceleration chamber 320 are filled with lubricant, and since the motor chamber 310 and the deceleration chamber 320 are communicated with each other, the lubricant can flow between the motor chamber 310 and the deceleration chamber 320. Lubricating oil is lubricated the group with higher speed, cools off the motor system simultaneously. Because the motor set and the speed reduction set are integrated in the shell 300, the problem of oil leakage cannot occur when lubricating oil flows in the motor cavity 310 and the speed reduction cavity 320, and the problem of oil leakage when the motor set rotates at a high speed is fundamentally solved. The conductive windings of the stator 120 are soaked in the lubricant, and the conductive windings have the property of preventing corrosion of the lubricant. The motor set and the speed reducing set are soaked in lubricating oil at the same time, so that the rotary seal between the input shaft of the speed reducing set and the motor set is omitted (or reduced), the problem of oil leakage of the speed reducing set is avoided, and the energy consumption of the extruder is reduced.
Further, in order to improve the cooling effect of the lubricating oil, a cooling mechanism is installed outside the housing 300, the cooling mechanism includes a circulation pipe 510, a circulation oil pump 520, and a cooler 530, the circulation oil pump 520 and the cooler 530 are installed on the circulation pipe 510, one end of the circulation pipe 510 is communicated with the motor cavity 310, and the other end is communicated with the deceleration cavity 320. When the lubricating oil circulation device works, the circulation oil pump 520 is started, the lubricating oil in one of the motor cavity 310 and the deceleration cavity 320 is pumped out, the lubricating oil flows through the cooler 530 for cooling and then flows back to the other cavity, the flowing speed of the lubricating oil between the motor cavity 310 and the deceleration cavity 320 is accelerated under the action of the circulation oil pump 520, and the lubricating and cooling effects are improved. The lubricant oil in the cooler 530 may be dissipated by a cooling housing of the cooler 530 and an external environment, a fin structure may be disposed on the surface of the cooler 530 to increase the heat dissipation area, or a winding pipe structure may be disposed in the cooler 530 to increase the heat dissipation path. Wherein, a distributed flow channel 121 is arranged at the outer circle of the stator 120, and the distributed flow channel 121 can be arranged on the outer circle surface of the stator 120 or in the axial direction through the inside of the stator. The lubricating oil is used for dissipating heat of the motor unit through the distributed flow channel 121 on the outer circle of the stator 120. Wherein, lubricating oil also can flow through the runner of specific structure and circulate the rotor of motor group for the motor group has formed the two cooling flow ways of outside stator and inside rotor, makes the cooling effect of motor group further strengthen.
In some embodiments of the present invention, as shown in fig. 1, the reduction cavity 320 is configured as a rectangular cavity according to the space occupation size of the reduction gear set 210, and the motor cavity 310 is configured as a rectangular cavity according to the space occupation size of the motor set. Generally, the motor chamber 310 is smaller in space than the deceleration chamber 320. In this embodiment, motor chamber 310 is located the one side of speed reduction chamber 320, and the cooperation setting in motor chamber 310 and speed reduction chamber 320 makes casing 300 be L shape for certain space is left to the outside motor chamber 310 place side of casing 300, and the one end that output shaft 230 stretches out casing 300 then moves towards this space, and the homonymy space of the outer motor chamber 310 of make full use of casing 300 is in order to be connected output shaft 230 with external device, improves space utilization, reduces the space occupy-place.
In some embodiments of the present invention, the rotor 110 may be selected from a permanent magnet rotor 110 or an asynchronous rotor 110. The preferred rotor 110 is a permanent magnet design, which achieves high electrical energy conversion efficiency.
In the description herein, references to the description of "some specific embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. The utility model provides a special gear motor integration integrated configuration of extruder which characterized in that includes:
a motor group comprising a rotor (110) and a stator (120);
a reduction group comprising a reduction gear set (210), a shaft (220) and an output shaft (230);
casing (300), be equipped with motor chamber (310) and speed reduction chamber (320) that communicate each other in casing (300), motor chamber (310) with speed reduction chamber (320) structure as an organic whole or fit structure, the motor unit is installed in motor chamber (310), the speed reduction unit is installed in speed reduction chamber (320), rotor (110) with first order gear (211) of speed reduction gear train (210) share is same axle (220).
2. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 1, wherein: the motor cavity (310) and the adjacent cavity wall (301) of the speed reducing cavity (320) are provided with bosses (330), the shaft (220) penetrates through the shaft section of the bosses (330) and is rotatably connected onto the bosses (330) through at least one bearing (400), and the shaft (220) penetrates through one end of the first-stage gear (211) and is installed in the speed reducing cavity (320) through the bearing (400).
3. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 2, wherein: the boss (330) protrudes into the motor cavity (310) towards the motor set and leans against the rotor (110).
4. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 2 or 3, wherein: the bearing (400) mounted on the boss (330) is mounted adjacent to the rotor (110).
5. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 2 or 3, wherein: the shaft (220) penetrates through the shaft section of the boss (330) and is rotatably connected to the boss (330) through the two bearings (400).
6. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 2, wherein: one end of the shaft (220) passes through the rotor (110) and is mounted in the decelerating chamber (320) through a bearing (400).
7. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 2, wherein: one end of the shaft (220) extends into the rotor (110) so that the rotor (110) is mounted in the motor cavity (310) via the shaft (220) in a bearingless suspension.
8. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 1, wherein: lubricating oil which can flow in the motor cavity (310) and the speed reduction cavity (320) is arranged in the shell (300), and the motor set and the speed reduction set are soaked in the lubricating oil.
9. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 8, wherein: the conductive windings of the stator (120) are immersed in the lubricating oil.
10. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 8, wherein: and a distributed flow channel (121) is arranged on the excircle of the stator (120).
11. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 7, wherein: still including connecting the outside cooling body of casing (300), cooling body includes circulating line (510), circulating oil pump (520) and cooler (530), circulating oil pump (520) with cooler (530) are installed on circulating line (510), circulating line (510) one end with motor chamber (310) intercommunication, the other end with speed reduction chamber (320) intercommunication.
12. The integrated structure of the speed reducing motor special for the extruder as claimed in claim 1, wherein: the rotor (110) is a permanent magnet rotor (110) or an asynchronous rotor (110).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202210204830.0A CN114696532A (en) | 2022-03-02 | 2022-03-02 | Special speed reducing motor integrated structure for extruder |
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CN202210204830.0A CN114696532A (en) | 2022-03-02 | 2022-03-02 | Special speed reducing motor integrated structure for extruder |
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CN114696532A true CN114696532A (en) | 2022-07-01 |
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CN202210204830.0A Pending CN114696532A (en) | 2022-03-02 | 2022-03-02 | Special speed reducing motor integrated structure for extruder |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117713479A (en) * | 2024-02-04 | 2024-03-15 | 广东安承动力科技有限公司 | Special motor of melt adhesive extruder and melt adhesive extrusion driving structure |
-
2022
- 2022-03-02 CN CN202210204830.0A patent/CN114696532A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117713479A (en) * | 2024-02-04 | 2024-03-15 | 广东安承动力科技有限公司 | Special motor of melt adhesive extruder and melt adhesive extrusion driving structure |
CN117713479B (en) * | 2024-02-04 | 2024-06-04 | 广东安承动力科技有限公司 | Special motor of melt adhesive extruder and melt adhesive extrusion driving structure |
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