Large wind power gearbox planetary bracket bearing arrangement structure

Abstract

The invention discloses a large wind power gearbox planetary bracket bearing arrangement structure which is good in safety and reliability and low in cost. The large wind power gearbox planetary bracket bearing arrangement structure further comprises a pressing plate (9). A left bearing (6) and a right bearing (7) are small conical roller bearings of the same specification. The axial width of an assembling portion (1-1) of a planetary bracket (1) is larger than the sum of the axial width of the left bearing (6) and the axial width of the right bearing (7). The axial width of a downwind-direction box body (5) corresponds to the axial width of the assembling portion (1-1) of the planetary bracket (1), and the inner wall of the downwind-direction box body (5) is provided with an isolation portion (5-1) extending inwards. The right bearing (6) is also assembled between the assembling portion (1-1) of the planetary bracket (1) and the downwind-direction box body (5), the right end face of the right bearing (6) closely adjoins with the left end face of the isolation portion (5-1), and the left end face of the right bearing (7) closely adjoins with the right end face of the isolation portion (5-1). The pressing plate (9) is assembled to the right end of the planetary bracket (1), and the left end face of the pressing plate (9) closely adjoins with the right end face of the right bearing (7).

Description

technical field [0001] The invention relates to a large-scale wind power gearbox, in particular to a bearing arrangement structure for a planet frame of a large wind power gearbox. Background technique [0002] see figure 1 As shown, at present, the common large-scale wind power gearbox planetary carrier bearing arrangement structure in the domestic and foreign markets includes: a planetary carrier 1 with an assembly part 1-1 extending axially to the right, an upwind box 3, an inner ring gear 4. The downwind box 5, the left bearing 6 and the right bearing 7; the upwind box 3, the inner ring gear 4 and the downwind box 5 are detachably connected from left to right and surround the planet carrier 1, and the inner The ring gear 4 is assembled on the planet carrier 1 , the left bearing 6 is assembled between the planet carrier 1 and the upwind box 3 , and the right bearing 7 is assembled between the assembly part 1 - 1 of the planet carrier 1 and the downwind box 5 . Depend on...

AI Technical Summary

Problems solved by technology

It can be seen from Figure 1, in this large wind power gearbox In the bearing arrangement structure of the planet carrier, the span between the left bearing 6 and the right bearing 7 is large, and the left bearing 6 is a large bearing much larger than the right bearing 7, and its inner diameter is larger than 1m, so the overall Heavy, the existing technical problems are: one is that the left bearing 6 of the large bearing is assembled between the planet carrier 1 and the upwind box body 3, and slipping failure is prone to occur during work, and the safety and reliability are poor; the other is that the large bearing The size of the left bearing 6 is larger, and the cost of materials and manufacturing is higher; the third is that the left bearing 6 and the right bearing 7 are not bearings of the same size, and the two cannot be used in common, and the versatility is poor; the fourth is that the left bearing 6 is assembled on the planet Between the frame 1 and the upwind box 3, the right bearing 7 is assembled between the assembly part 1-1 of the planet carrier 1 and the downwind box 5, respectively located at the left and right ends of the planet carrier 1, the left bearing 6 and the right bearing The installation and disassembly of 7 is more complicated

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