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CN-121984270-A - Light water-cooled permanent magnet/asynchronous motor and manufacturing process thereof

CN121984270ACN 121984270 ACN121984270 ACN 121984270ACN-121984270-A

Abstract

The invention discloses a light water-cooled permanent magnet/asynchronous motor and a manufacturing process thereof, wherein a traditional motor base adopts a cast iron structure, so that the problems of large weight, low heat dissipation efficiency, poor corrosion resistance and the like are solved, the existing welding type water-cooled base is often uneven in cooling caused by unreasonable runner design, a sealing structure is easy to leak under high-pressure and vibration working conditions, and light weight and high reliability are difficult to be achieved. Aiming at the problems, the invention provides an all-steel welding lightweight machine base, which is formed by modular components such as a steel plate cylinder, longitudinal ribs, transverse ribs, aluminum water-proof strips, an arc-shaped outer guard plate and the like to form an S-shaped serial water-cooling flow channel, wherein a heavy anti-corrosion nano coating is sprayed on the inner wall of the S-shaped serial water-cooling flow channel, and a fluororubber sealing element is matched with a multi-point rigid end cover to be connected, so that the synergistic optimization of efficient heat dissipation, high-pressure sealing, strong corrosion resistance and vibration reduction performance is realized, and the all-steel welding lightweight machine base is suitable for application scenes of new energy automobiles, rail transit and the like with strict requirements on power density and environmental adaptability.

Inventors

  • WANG HONGBO

Assignees

  • 安徽朗轶工业自动化系统有限公司

Dates

Publication Date
20260505
Application Date
20260128

Claims (10)

  1. 1. A lightweight water-cooled permanent magnet/asynchronous motor, comprising: The motor base (10) comprises a steel plate cylinder (101), four pairs of longitudinal ribs (102) are uniformly welded on the outer wall of the steel plate cylinder (101) along the circumferential direction, a water passing port I (102 a) is formed between each pair of longitudinal ribs (102), a sealing steel plate (103) is welded on the outer side of the water passing port I (102 a), end cover connecting blocks (104) are respectively welded at the two ends of each pair of longitudinal ribs (102), arc-shaped corner guard plates (109) are jointly welded on the outer sides of each pair of longitudinal ribs (102), end cover connecting strips (110) are respectively welded between the two adjacent pairs of longitudinal ribs (102), transverse ribs (111) are welded on the middle part, a plurality of water passing ports II (111 b) are uniformly formed on the transverse ribs (111) along the circumferential direction, a plurality of I-shaped aluminum water blocking strips (112) are arranged between the end cover connecting strips (110) and the transverse ribs (111), three water passing ports (112 a) are formed at the outer ends of each pair of the aluminum water blocking strips (112), the outer sides of the two pairs of longitudinal ribs (102) are jointly welded, the longitudinal ribs (117) are connected with the arc-shaped steel plates (117) through the arc-shaped water blocking plates and are sequentially communicated with the arc-shaped steel plates (101), the inner wall surface of the S-shaped water cooling flow channel is uniformly sprayed with a heavy anti-corrosion nano coating; the front end assembly (20) comprises a front end cover (201) fixedly arranged on each front end cover connecting block (104) and each front end cover connecting strip (110); The rear end assembly (30) comprises a rear end cover (301) fixedly arranged on each rear end cover connecting block (104) and each end cover connecting strip (110); A stator (40) coaxially fixed to the inner wall of the steel plate cylinder (101); the rotor (50) is rotatably supported between the front end cover (201) and the rear end cover (301) through a bearing.
  2. 2. The light water-cooled permanent magnet/asynchronous motor according to claim 1, wherein a plurality of first positioning grooves (110 a) are uniformly formed in the inner side of each end cover connecting strip (110) along the circumferential direction, a plurality of second positioning grooves (111 a) are uniformly formed in the front side and the rear side of each transverse rib (111) along the circumferential direction, and two ends of each aluminum water-proof strip (112) are respectively clamped in the corresponding first positioning grooves (110 a) and the corresponding second positioning grooves (111 a).
  3. 3. The light water-cooled permanent magnet/asynchronous motor according to claim 2, wherein flat sealing sheets (113) are respectively arranged between the aluminum water-proof strip (112) and the first positioning groove (110 a) and between the aluminum water-proof strip and the second positioning groove (111 a), O-shaped sealing strips (114) are arranged between the aluminum water-proof strip (112) and the steel plate cylinder (101), T-shaped sealing strips (115) are arranged between the aluminum water-proof strip (112) and the arc-shaped outer guard plate (117), flat sealing strips (116) are arranged between the transverse ribs (111) and the arc-shaped outer guard plate (117), and the flat sealing sheets (113), the O-shaped sealing strips (114), the T-shaped sealing strips (115) and the flat sealing strips (116) are all made of fluorine rubber materials.
  4. 4. The light water-cooled permanent magnet/asynchronous motor according to claim 1, wherein a fixing seat (124) is fixedly connected to the outer side of the right arc-shaped outer guard plate (117), a water inlet (125) and a water outlet (126) are respectively arranged at the upper part and the lower part of the fixing seat (124), and a water outlet (127) is arranged at the outer side of the lower arc-shaped outer guard plate (117).
  5. 5. A lightweight water-cooled permanent magnet/asynchronous motor according to claim 1, characterized in that the middle parts of the two pairs of longitudinal ribs (102) on the upper side are respectively welded with a lifting ring seat (105), and the top of the lifting ring seat (105) is connected with a lifting ring (106) in a threaded manner.
  6. 6. A lightweight water cooled permanent magnet/asynchronous motor as claimed in claim 5, characterized in that the undersides of the two pairs of longitudinal ribs (102) on the underside are welded with foot mounting plates (108) respectively by foot reinforcing ribs (107).
  7. 7. The light-weight water-cooled permanent magnet/asynchronous motor according to claim 1, wherein a first junction box seat (118) and a second junction box seat (119) are respectively welded to the front part and the rear part of an upper arc-shaped outer guard plate (117), and a motor junction box (120) and a sensor junction box (121) are respectively welded to the top parts of the upper arc-shaped outer guard plate.
  8. 8. A lightweight water-cooled permanent magnet/asynchronous motor as claimed in claim 1, characterized in that the front and rear parts of the right arc-shaped outer shield (117) are welded with a first nameplate (122) and a second nameplate (123), respectively.
  9. 9. The light water-cooled permanent magnet/asynchronous motor according to claim 7, wherein a first connecting ring (202) is coaxially connected to the outer side of the front end cover (201), a first bearing oil injection lubricating tube (203) and a first bearing temperature sensor (204) are respectively connected to the upper side and the lower side of the front end cover, a second connecting ring (302) is coaxially connected to the outer side of the rear end cover (301), and a second bearing oil injection lubricating tube (303) and a second bearing temperature sensor (304) are respectively connected to the upper side and the lower side of the rear end cover.
  10. 10. A lightweight water-cooled permanent magnet/asynchronous motor according to claim 1, characterized in that the motor housing (10) is prepared by the following process steps: s1, uniformly welding four pairs of longitudinal ribs (102) on the outer wall of a steel plate cylinder (101) along the circumferential direction under the positioning of a special fixture; s2, with the aid of a clamp, sequentially completing the following welding operations: a sealing steel plate (103) is welded outside a water passing port I (102 a) between each pair of longitudinal ribs (102); respectively welding end cover connecting blocks (104) at two ends of each pair of longitudinal ribs (102); the middle parts of the two pairs of longitudinal ribs (102) at the upper side are welded with hanging ring seats (105); Welding a foot mounting plate (108) at the bottoms of the two pairs of longitudinal ribs (102) at the lower side, and welding a foot reinforcing rib (107) between the foot mounting plate (108) and the longitudinal ribs (102); s3, welding end cover connecting strips (110) at two axial ends between two adjacent pairs of longitudinal ribs (102), and welding transverse ribs (111) at the middle part; s4, uniformly arranging a plurality of aluminum water-proof strips (112) along the circumferential direction, and enabling two ends of the aluminum water-proof strips to be respectively clamped between the end cover connecting strips (110) and the transverse ribs (111); s5, uniformly spraying a heavy anti-corrosion nano coating on the inner wall surface of the S-shaped water cooling flow channel and the inner wall surface of each arc-shaped outer guard plate (117); s6, welding each arc-shaped outer guard plate (117) to the outer sides of the corresponding longitudinal ribs (102) and the end cover connecting strips (110), and then jointly welding arc-shaped corner guard plates (109) on the outer sides of each pair of longitudinal ribs (102) to finally form the complete motor base (10).

Description

Light water-cooled permanent magnet/asynchronous motor and manufacturing process thereof Technical Field The invention relates to the technical field of motors, in particular to a lightweight water-cooled permanent magnet/asynchronous motor and a manufacturing process thereof. Background With the strategic pushing of 'double carbon' and the rapid increase of the demand of high-end equipment for high-power density motors, the high-efficiency water-cooled motor becomes a development trend. However, the existing water cooling machine base generally adopts a double-layer thick-wall steel plate structure, namely a closed water channel is formed between an inner cylinder and an outer cylinder through welding or machining, so that the material consumption is large, the whole machine is heavy, the manufacturing process is extremely complicated, and the water channel sealing can be realized only by carrying out multiple high-precision machining procedures such as rolling, chamfering and multi-layer surfacing on a thick plate, and then turning, boring, hot sheathing or pressure assembling. The process has the advantages of large welding quantity, high internal stress, long production period and high cost, and is difficult to adapt to the market demands of intelligent manufacturing and quick delivery. More serious, the traditional steel water-proof strip and the cylinder body are in metal interference fit or single rubber seal, the sealing failure is easy to cause due to the thermal expansion difference under long-term high-pressure and high-temperature cooling circulation, leakage is caused, meanwhile, the corrosion resistance of the inner wall of the water channel is weak, scaling and blocking are easy to occur, and the heat dissipation reliability and the service life of the motor are seriously affected. Disclosure of Invention The invention aims to provide a light-weight water-cooled permanent magnet/asynchronous motor and a manufacturing process thereof, so as to solve the defects caused by the prior art. A lightweight water-cooled permanent magnet/asynchronous motor comprising: The motor base comprises a steel plate cylinder, wherein four pairs of longitudinal ribs are uniformly welded on the outer wall of the steel plate cylinder along the circumferential direction, a water passing port I is formed between each pair of longitudinal ribs, a sealing steel plate is welded on the outer side of the water passing port I, end cover connecting blocks are respectively welded at the two ends of each pair of longitudinal ribs, arc-shaped angle guard plates are jointly welded on the outer sides of each pair of longitudinal ribs, end cover connecting strips are respectively welded at the two ends between each two adjacent pairs of longitudinal ribs, transverse ribs are welded in the middle, a plurality of water passing ports II are uniformly formed on the transverse ribs along the circumferential direction, a plurality of I-shaped aluminum water isolating strips uniformly arranged along the circumferential direction are arranged between the end cover connecting strips and the transverse ribs, a water passing port III is formed at the outer ends of the aluminum water isolating strips, arc-shaped outer guard plates are jointly welded on the outer sides of the adjacent pairs of longitudinal ribs; the front end assembly comprises a front end cover and is fixedly arranged on each end cover connecting block and each end cover connecting strip on the front side; the rear end assembly comprises a rear end cover and is fixedly arranged on each end cover connecting block and each end cover connecting strip at the rear side; the stator is coaxially fixed on the inner wall of the steel plate cylinder; The rotor is rotatably supported between the front end cover and the rear end cover through a bearing. Preferably, the inner side of each end cover connecting strip is uniformly provided with a plurality of first positioning grooves along the circumferential direction, the front side and the rear side of each transverse rib are uniformly provided with a plurality of second positioning grooves along the circumferential direction, and two ends of each aluminum waterproof strip are respectively clamped in the corresponding first positioning grooves and the corresponding second positioning grooves. Preferably, flat sealing sheets are respectively arranged between the aluminum waterproof strip and the first positioning groove and between the aluminum waterproof strip and the second positioning groove, O-shaped sealing strips are arranged between the aluminum waterproof strip and the steel plate cylinder, T-shaped sealing strips are arranged between the aluminum waterproof strip and the arc-shaped outer guard plate, flat sealing strips are arranged between the transverse ribs and the arc-shaped outer guard plate, and the flat sealing sheets, the O-shaped sealing strips, the T-shaped sealing strips and the flat sealing strips are all made of flu