Introduction of End Cover of Train Traction Motor 씌우다

The end motor cover of the train traction motor is used to close the motor and support the rotor. A cooling air inlet is provided on the upper part of the end cover of the non-transmission end, and a plurality of large holes are provided on the end cover of the transmission end as an air outlet. The rotor core is made up of silicon steel sheets with good magnetic conductivity, and there are 46 grooves in the outer circumference. There are ventilation holes on the core to dissipate heat and reduce mass. Both ends of the rotor core are equipped with pressure rings. The traction motor is mechanically fixed together through the threaded holes on the front and rear end covers and the bracket with the lifting spring. Profiles connect the spring brackets to form a rectangular lifting structure. When the motor is installed, the overall tilt to the driving end is 1.5°. The mechanical connection of the motor to the vehicle is achieved by means of a bracket with elastic suspension. Motion is transmitted to the wheel sets of the train via an appropriate cardan shaft and gearbox. The traction motor is mechanically connected to the cardan shaft by a safety device that protects the cardan shaft and gearbox from over-torque in the event of a short circuit between the two-phase coils of the traction motor. In the efficient operation of the traction motor, the end cover is a key support component, and its performance is directly related to the reliability of the motor, life and environmental adaptability.

The Function Orientation of The Traction Motor Cover

As a simple protective motor cover, but in fact it takes multiple missions:

structural support, as the connection of shell and rotor hub motor end cover, needs to carry the rotor high-speed rotation of the centrifugal force and vibration load;

 Thermal management center: by optimizing the heat dissipation design, build end cover from the internal winding to the path of thermal conductivity of the external environment;

Sealing barrier: in complex condition, such as rail, electric cars, the end cover can resist the invasion of the moisture, dust and chemical corrosive medium; Electromagnetic compatibility interfaces: end cover part of the design should be integrated electromagnetic shielding layer, suppress the high-frequency harmonic disturbance to the surrounding equipment.

Performance dimensions of The Traction Motor End Cover

Mechanical properties of the fatigue strength: to satisfy the 10 ^ 7 times zero flaw under circulating load requirements (refer to the IEC 60034 기준); Dynamic deformation control: under the rated speed, the end cover flange surface axial pulse quantity usually 0.05 mm or less; Impact toughness: – 40 ℃ low-temperature impact energy (KV2) or greater 27 j (for frigid application scenario).

The thermal efficiency of heat transfer: aluminum alloy plate thermal conductivity should be 150 /(m·K) 이상, with forced air cooling when the temperature control is within 55 케이; Thermal expansion coefficients of thermal expansion match: motor cover and frame difference to 1.5 * 10 ^ – 6 / ℃ or less and avoid the structure stress of high-temperature conditions.

The environmental adaptability of salt fog resistance: coastal environment application by 480 h neutral salt spray test (ISO 9227); Seal level: IP67 protection standards can withstand under 1 m water depth soak 30 분; Fretting wear resistance: the bearing chamber surface after nitriding treatment, microhardness to achieve HV650 above. Grade three, motor cover hardcore process control parameters of ductile cast iron QT500-7: graphite spheroidization rate is 90% 이상, pearlite content control in 30-50%; Low-pressure casting process: vacuum degree of the cavity 5 kph or less, to ensure that key parts without shrinkage cavity defects; Aging treatment: 300 ℃ x 6 h to stress annealing, 50 mph or less residual stress. Dynamic stiffness matching parameters of the bearing chamber: the radial stiffness of 5 x 10 ^ 8 or higher n/m, the axial rigidity of 3 x 10 ^ 8 n/m or higher; Modal frequency to avoid: first-order natural frequency to avoid the wheel-rail excitation frequencies (120-180 hz); Thermal deformation compensation: design expansion gap 0.15 0.3 mm (thermal gradient calculation according to the line).

Service monitoring data of the vibration intensity: the use of bearing vibration velocity RMS 2.8 mm/s or less (ISO 10816-3); Temperature threshold: winding end temperature alarm value set to 105 k corresponding insulation class (200); Seal life: fluorine rubber seal replacement cycle 800000 km or more (the equivalent of three-phase).

패키지 The Traction Motor End Cover

Polybag+Carton box+Wood 케이스/팔레트, 고객의 요청에 따라

회사 프로필

뤄양포뇨중공업(Luoyang Fonyo Heavy Industries), 주식회사. 에 설립되었습니다 1998, 면적 72,600㎡, 이상으로 300 직원, 32 기술자, 포함 5 수석 엔지니어, 11 보조 엔지니어, 그리고 16 기술자. 낙양 공정 기술 센터로 평가되었습니다., 낙양기술R&D센터, 여러 번 국가 하이테크 기업.
우리의 생산 능력은 30,000 연간 톤. 현재, 우리는 주로 주강을 생산하고 있습니다, 주철 (회색 철, 연성이 있는 철, 등.), 완제품 가공 및 부품 조립.제품은 러시아로 수출되었습니다., 미국, 독일, 아르헨티나, 일본, 프랑스, 남아프리카,이탈리아 및 기타 국가.

자주 묻는 질문

1분기: 당신은 제조업체입니까, 아니면 무역회사입니까??
에이:우리는 제조업체입니다. 우리 회사는 에 설립되었습니다. 1998, 주조 업계에서 거의 30년 동안, 총면적 72,600㎡, 공장건축면적 51,000㎡.
2분기. 주요 제품은 무엇입니까?
에이: 우리는 주로 철강 주조에 중점을 두고 있습니다., 철 주조, 완제품 가공, 및 부품 조립 생산.
3분기: 주조 부품을 얼마나 정밀하게 생산할 수 있습니까??
에이: 우리는 다양한 주조 공정으로 주조 부품을 생산할 수 있는 능력을 갖추고 있습니다.. 생산은 ISO를 엄격히 준수합니다. 9001, ISO 14001 및 ISO45001,EN15085, 아이리스.
4분기. 샘플에 따라 생산할 수 있습니까??
 예, 우리는 귀하의 샘플이나 기술 도면으로 생산할 수 있습니다. 샘플을 받은 후에도 도면을 제작할 수 있습니다..
Q5: 배송 전 품질 관리는 어떻게 합니까??
에이: 품질 검사는 철강 주조 부품의 품질을 보장하는 매우 중요한 요소입니다.. 우리는 따른다 3 전체 생산 과정 중 검사 횟수. 그리고 우리는 재료 테스트 보고서를 제공할 것입니다, 치수 테스트 보고서, 납품 전에 고객에게 기계적 특성 테스트 보고서.

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