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CN-120955980-B - Driving integrated alternating current servo motor

CN120955980BCN 120955980 BCN120955980 BCN 120955980BCN-120955980-B

Abstract

The invention relates to the technical field of servo motors, and discloses a driving integrated alternating current servo motor, which comprises a motor shell, wherein an air cooling module is arranged on the surface of the motor shell, a driver is arranged at the top of the motor shell, the bottom of the driver is arranged into an inverted-concave structure, the inverted-concave structure is enclosed with the top of the motor shell and the air cooling module to form an oriented air chamber, the inverted-concave bottom of the driver is enclosed with the motor shell and the air cooling module to form an open oriented air chamber, the air flow is forced to flow through the motor heat dissipation area and the driver heating element area by combining the cooperative layout of the air flow communication cavity at the top of the motor shell and the hollowed-out guide strip, the directional air chamber does not need a complex flow channel structure, the natural air channel and the fins are utilized to realize accurate heat dissipation, when the heights of the fins are higher than those of the circulation grooves, the forced air flow is attached to the fins to strengthen heat exchange, when the heights of the fins are lower than those of the circulation grooves, the wind resistance is reduced, the large-flow heat dissipation is adapted, the two modes cover the requirements of multiple scenes, the heat dissipation efficiency is ensured, the structure is simplified, and the cost is reduced.

Inventors

  • ZHANG YIHONG
  • YAN ANZHAO
  • YAN JUNJIE
  • WANG LIANGJUN

Assignees

  • 浙江旺得福车业有限公司

Dates

Publication Date
20260508
Application Date
20250905

Claims (7)

  1. 1. The driving integrated alternating current servo motor comprises a motor shell (1), wherein an air cooling module (2) is arranged on the surface of the motor shell (1), and a driver (3) is arranged at the top of the motor shell, and the driving integrated alternating current servo motor is characterized in that the bottom of the driver (3) is of an inverted-concave structure, and the inverted-concave structure, the top of the motor shell (1) and the air cooling module (2) are enclosed to form a directional air chamber; The air flow generated by the air cooling module (2) enters the directional air chamber through the air inlet and forcedly flows through a top heat dissipation area of the motor shell (1) and a corresponding area of a heating element at the bottom of the driver (3) to be discharged, so that cooperative directional heat dissipation is realized; The motor comprises a motor shell (1), and is characterized in that an airflow communication cavity (21) is formed in the top of the motor shell (1), the airflow communication cavity (21) is communicated with an orientation air chamber, hollow guide strips (11) are symmetrically and integrally formed in the top of the motor shell (1), the hollow guide strips (11) are mutually communicated with the airflow communication cavity (21), a sliding flange (31) is integrally formed in the bottom of a driver (3) in a downward extending mode, the driver (3) is in sliding fit with the surface of the hollow guide strips (11) through the sliding flange (31) to achieve an assembly effect, and threaded holes are formed in the surfaces of the hollow guide strips and are in threaded connection with bolts; Each hollowed-out guide bar (11) is internally provided with a composite damping plate (4), each composite damping plate (4) consists of a first elastic bent plate (41), a second elastic bent plate (42), a third elastic bent plate (43) and two fixing clamping rings (44), two ends of the first elastic bent plate (41) are fixedly connected to the inner wall of each hollowed-out guide bar (11), and the first elastic bent plate (41), the second elastic bent plate (42) and the third elastic bent plate (43) are fixed into an integral structure by the two fixing clamping rings (44); the top of the hollowed-out guide bar (11) is provided with an elastic piece abdication groove (111), the elastic curved plate III (43) protrudes out of the surface of the elastic piece abdication groove (111), and the bending directions of the elastic curved plate I (41), the elastic curved plate II (42) and the elastic curved plate III (43) are all upward.
  2. 2. The drive-integrated AC servo motor according to claim 1, wherein the elastic curved plate III (43) is abutted to the inside of the hollow guide bar (11) when the driver (3) slides on the surface of the hollow guide bar (11).
  3. 3. The drive-integrated alternating current servo motor according to claim 1, wherein the hollow guide strips (11) are provided with circulation grooves (112) on one sides close to each other, and a plurality of fins (12) are fixedly connected to the top of the motor housing (1).
  4. 4. A drive-integrated AC servo motor as set forth in claim 3, wherein the fin (12) has a height higher than that of the flow-through groove (112).
  5. 5. The drive-integrated alternating current servo motor according to claim 3, wherein the height of the fins (12) is lower than that of the circulating grooves (112), one side, far away from the air cooling module (2), of the two hollowed-out guide strips (11) is fixedly connected with an end connecting plate (6), and a blocking piece (5) is arranged at the bottom of the end connecting plate (6).
  6. 6. The drive-integrated alternating current servo motor according to claim 5, wherein the blocking piece (5) is composed of a rotating shaft (51) and flexible bristles (52), the rotating shaft (51) is rotatably connected between the hollowed-out guide bars (11), and the top of the flexible bristles (52) is fixedly connected to the bottom of the rotating shaft (51).
  7. 7. The drive-integrated AC servo motor according to claim 6, wherein the blocking member (5) and the end connecting plate (6) enclose the directional air chamber structure into a semi-closed structure.

Description

Driving integrated alternating current servo motor Technical Field The invention relates to the technical field of servo motors, in particular to a driving integrated alternating current servo motor. Background The existing drive integrated alternating current servo motor is high-efficiency drive equipment integrating a servo motor body and a driver, and the motor-drive-control deep fusion is realized through structural optimization, so that a mode of separating and installing a traditional motor and the driver is abandoned, a power module, a control circuit and a motor shell are integrated by adopting a compact design, and a connecting cable and an installation space are reduced. In the prior art for driving an integrated alternating current servo motor, although the structural integration of a motor body and a driver is realized, a plurality of defects to be solved still exist in practical application, namely, the limitation of heat dissipation design is overcome, and as the motor and the driver are closely arranged on the same assembly surface, a large amount of heat generated during the operation of the motor and the driver can be accumulated on the contact surface, so that a remarkable thermal coupling effect is formed. In order to alleviate this problem, the prior art often adopts a mode of arranging a flow channel on a mounting surface to dissipate heat, and tries to take away heat through a fluid medium, however, the structural characteristics of the flow channel itself make the flow channel become a new heat resistance source-roughness of the inner wall of the flow channel, boundary layer effect of fluid flow and contact heat resistance between the flow channel and a motor shell as well as between the flow channel and a driver, so that the heat dissipation efficiency is greatly reduced, the heat is difficult to be rapidly led out, and the overheat and the ageing of power devices in the driver are easily caused during long-term operation, thereby influencing the service life of equipment. The more outstanding problem lies in the cost burden that the runner design brought, and the processing of runner needs the machining process of high accuracy, and no matter milling after casting shaping is maintained, or directly adopt CNC machining center to carry out the cavity and excavate, all need consume a large amount of man-hours and equipment cost. For the integrated structure with compact volume, the layout of the runner also needs to avoid the internal cable and the structural support position, the design complexity is further improved, the manufacturing cost is obviously increased, the cost control of the integrated motor with high price due to integrated design is more difficult to realize, and the popularization and application of the integrated motor in middle-low end automation scenes are limited. In addition, the reliability problem caused by vibration transmission is not ignored, when the servo motor operates, the high-speed rotation of the rotor and the electromagnetic force of the stator winding can generate periodic vibration, the vibration is directly transmitted to the driver through a rigidly connected mounting surface, in the existing integrated structure, the motor and the driver are assembled by adopting rigid bolt fastening, the effective vibration isolation design is lacking, vibration energy is caused to act on electronic elements in the driver without attenuation, for example, fragile parts such as capacitor pins and welding spots in the driver bear high-frequency vibration for a long time, fatigue fracture or poor contact is easy to occur, and a precise control chip can also cause signal drift due to vibration interference, so that control accuracy is reduced or even malfunction is caused. The vibration coupling problem is particularly obvious under the working conditions of high rotating speed and high load, the running stability and the reliability of equipment are seriously affected, and the problem of vibration transmission is difficult to fundamentally solve because the prior art simply relies on a solution of increasing the wall thickness of a structure or selecting high-strength materials, and the solution falls into vicious circle of increasing the weight and increasing the cost. The superposition of the defects makes the balance among heat dissipation efficiency, cost control and operation reliability of the existing drive integrated alternating current servo motor difficult to realize, and restricts the further application of the drive integrated alternating current servo motor in industrial scenes with high precision and high stability requirements. Therefore, the invention provides a driving integrated alternating current servo motor. Disclosure of Invention The invention aims to provide a driving integrated alternating current servo motor so as to solve the problems in the background technology. The invention provides a driving integrated alternating current servo motor