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CN-224233458-U - Motor for improving axial support and wet mill

CN224233458UCN 224233458 UCN224233458 UCN 224233458UCN-224233458-U

Abstract

The motor with improved axial support and the wet grinding machine comprise a machine shell, a stator fixed on the machine shell, a rotor rotatably accommodated at the inner side of the stator and provided with a rotating shaft, and a first end cover and a second end cover arranged at two axial sides of the machine shell, wherein the first end cover and the second end cover are respectively provided with a first chamber and a second chamber. According to the motor with improved axial bearing, through improving the supporting structures on the two axial sides of the motor, the motor is convenient to transmit the born axial load to the second end cover, meanwhile, the rotating shaft of the motor can be self-adaptively self-aligned through the self-aligning roller bearings on the two axial sides, radial runout of the rotating shaft during rotation is reduced, and the axial load capacity of the motor is improved while smooth rotation of the motor is ensured.

Inventors

  • LI CHAOHUI
  • YANG WEI

Assignees

  • 欧佩德伺服电机节能系统有限公司

Dates

Publication Date
20260512
Application Date
20250226
Priority Date
20240322

Claims (10)

  1. 1. The motor with improved axial support comprises a machine shell (100), a stator (200) fixed on the machine shell, a rotor (300) rotatably accommodated at the inner side of the stator (200) and provided with a rotating shaft (310), a first end cover (400) and a second end cover (500) which are arranged at two axial sides of the machine shell (100), wherein the first end cover (400) and the second end cover (500) are respectively provided with a first chamber (1) and a second chamber (2), and the motor is characterized in that a first aligning roller bearing (610) for supporting the rotating shaft (310) is arranged in the first chamber (1), and a thrust bearing (620), a spacer (630) and a second aligning roller bearing (640) for supporting the rotating shaft (310) are sequentially arranged in the second chamber (2) from bottom to top along an axis.
  2. 2. The motor with improved axial support according to claim 1, wherein the casing (100) is a hollow cylindrical body with both ends open in the axial direction, the first end cover (400) is fixed to one axial end of the casing (100) and includes a cylindrical first mounting portion (410) and a plate-shaped first connecting portion (420) extending radially outward from the first mounting portion (410), and the second end cover (500) is fixed to the other axial end of the casing (100) and includes a cylindrical second mounting portion (510) and a plate-shaped second connecting portion (520) extending radially outward from the second mounting portion (510).
  3. 3. The motor with improved axial support according to claim 1 or 2, wherein the second chamber (2) is provided with a second groove (511) axially facing the end face of the thrust bearing (620), and an elastic gasket (710) for abutting the axial end face of the thrust bearing (620) is arranged in the second groove (511).
  4. 4. The motor with improved axial support according to claim 2, wherein the second mounting portion (510) is a cylindrical body, one side of the second mounting portion, which is close to the axial direction of the thrust bearing (620), is provided with a third cover plate (530) in a ring column shape, the other side is provided with a fourth cover plate (540) in a ring column shape, and a first sealing ring (720) is arranged between the third cover plate (530) and the radial direction of the rotating shaft (310).
  5. 5. The motor with improved axial support of claim 4, wherein the radial wall surface of the fourth cover plate (540) contacting the second mounting portion (510) is provided with more than 2 independent annular cover plate grooves (541).
  6. 6. The motor with improved axial support according to claim 2, characterized in that the radially outer surface of the first mounting part (410) is provided with a first liquid inlet hole (411) communicating with the first chamber (1) and/or the radially outer surface of the second mounting part (510) is provided with a second liquid inlet hole (512) communicating with the second chamber (2).
  7. 7. The motor with improved axial support according to claim 1, wherein the radial wall surface of the second chamber (2) contacting with the second aligning roller bearing (640) is concaved inwards to form more than 2 independent annular second radial grooves (513), and a second elastic sealing ring (730) is arranged on the second radial grooves (513).
  8. 8. The motor with improved axial support according to claim 7, wherein the radial wall surface of the first chamber (1) contacting with the first aligning roller bearing (610) is concaved inwards to form more than 2 independent annular first radial grooves (412), and a first elastic sealing ring (740) is arranged on the first radial grooves (412).
  9. 9. The wet grinding machine comprises a machine base (10), a charging barrel (20) fixed on the machine base, a stirrer (31) arranged in an inner cavity of the charging barrel (20) and a coupler (50), wherein the stirrer (31) comprises a stirrer shaft (30) extending outwards from one axial end of the inner cavity of the charging barrel (20), and the wet grinding machine is characterized by further comprising the motor (40) for improving axial support according to any one of claims 1 to 8, the coupler (50) is used for coupling a rotating shaft (310) of the motor (40) with the stirrer shaft (30), and the motor (40) is vertically arranged on or under the charging barrel (20).
  10. 10. The wet mill according to claim 9, characterized in that the rotational shaft (310) of the motor (40) is arranged coaxially to the agitator shaft (30).

Description

Motor for improving axial support and wet mill Technical Field The utility model relates to a motor for improving axial support and a wet grinding machine, wherein the IPC classification number of the motor is H02K 5/173 (2006.01). Background The bearing structure of the existing motor generally bears the weight of the rotor of the motor mainly, and has weak capacity of bearing external load, especially axial load. Referring to fig. 1, when the conventional motor 20 ́ is applied to a specific application (such as a wet mill), the motor 20 ́ needs to drive the transmission shaft 50 ́ mounted on the support 10 ́ by using the driving wheel 60 ́, the belt 80 ́ and the driven wheel 70 ́, and then the power is transmitted to the stirring shaft 40 ́ extending axially outwards from the feed cylinder 30 ́ through the transmission shaft 50 ́, so as to realize power transmission. When the existing motor is applied to complete equipment, power is transmitted to a workpiece through the cooperation of a plurality of parts, the power transmission efficiency is low, and a large assembly space is occupied, so that improvement needs to be made. For the terms and common knowledge, see the general scheme part 2 of the general scheme of the external dimension of the self-aligning roller bearing of the rolling bearing of the national standard GB/T288-2013 and the external dimension of the rolling bearing of GB/T273.2-2018, namely the thrust bearing, of the mechanical engineering manual and the motor engineering manual of the mechanical industry publishing society. Disclosure of utility model In order to solve the problems, the utility model provides the following technical scheme: The motor with improved axial support comprises a casing, a stator fixed on the casing, a rotor rotatably accommodated at the inner side of the stator and provided with a rotating shaft, and a first end cover and a second end cover arranged at two axial sides of the casing, wherein the first end cover and the second end cover are respectively provided with a first chamber and a second chamber. According to the motor with improved axial bearing, through improving the supporting structures on the two axial sides of the motor, the motor is convenient to transmit the born axial load to the second end cover, meanwhile, the rotating shaft of the motor can be self-adaptively self-aligned through the self-aligning roller bearings on the two axial sides, radial runout of the rotating shaft during rotation is reduced, and the axial load capacity of the motor is improved while smooth rotation of the motor is ensured. Further, the casing is a hollow columnar body with two open axial ends, the first end cover is fixed at one axial end of the casing and comprises a cylindrical first mounting part and a plate-shaped first connecting part extending outwards from the radial direction of the first mounting part, and the second end cover is fixed at the other axial end of the casing and comprises a cylindrical second mounting part and a plate-shaped second connecting part extending outwards from the radial direction of the second mounting part. Further, a second groove is formed in the second chamber axially towards the end face of the thrust bearing, and an elastic gasket for the axial end face of the thrust bearing to abut against is arranged in the second groove. Further, the second installation part is a cylindrical body, one side of the second installation part, which is close to the axial direction of the thrust bearing, is provided with a third cover plate in a ring column shape, the other side of the second installation part is provided with a fourth cover plate in a ring column shape, and a first sealing ring is arranged between the third cover plate and the radial direction of the rotating shaft. Further, more than 2 independent annular cover plate grooves are formed in the radial wall surface, where the fourth cover plate is in contact with the second mounting portion. Further, a first liquid inlet communicated with the first chamber is formed in the radial outer surface of the first mounting portion, and/or a second liquid inlet communicated with the second chamber is formed in the radial outer surface of the second mounting portion. Further, the radial wall surface of the second chamber, which is in contact with the second self-aligning roller bearing, is concaved inwards to form more than 2 independent annular second radial grooves, and the second radial grooves are provided with second elastic sealing rings. Further, the radial wall surface of the first chamber, which is in contact with the first self-aligning roller bearing, is concaved inwards to form more than 2 independent annular first radial grooves, and the first radial grooves are provided with first elastic sealing rings. The wet mill comprises a machine base, a charging barrel fixed on the machine base, a stirrer arranged in the inner cavity of the charging barrel, and a motor and a coupler for i