Connecting structure of large wind power accelerating gearbox

Abstract

The invention discloses a high-safety connecting structure of a large wind power accelerating gearbox. Right threaded blind holes (23) and blind holes (22) in an inner gear ring correspond to connecting holes (32) and pin holes (31) in a middle box body respectively, pin sets (6) correspond to the blind holes (22) in the inner gear ring and the pin holes (31) in the middle box body, left bolt sets (7) correspond to through holes (10) in a front box body and left threaded blind holes (21) in the inner gear ring, right bolt sets (8) correspond to the right threaded blind holes (23) in the inner gear ring and the connecting holes (32) in the middle box body, and the front box body (1), the inner gear ring (2) and the middle box body (3) are fixedly connected through the through holes (10), the left threaded blind holes (21), the blind holes (22), the right threaded blind holes (23), the connecting holes (32) and the pin holes (31) by adopting the pin sets (6), the left bolt sets (7) and the right bolt sets (8).

Description

technical field [0001] The invention relates to a large-scale wind power speed-up gearbox, in particular to a connection structure of a large-scale wind power speed-up gearbox. Background technique [0002] see figure 1 , figure 2 and image 3 , a common connection structure of a large-scale wind power speed-up gearbox, including a front box body 1 with through holes 10 evenly spaced along the axial direction on the flange, and matching through holes 20 evenly spaced along the axial direction The inner ring gear 2, and the middle case 3 with threaded blind holes 30 evenly spaced along the axial direction on the left side, the through hole 10 on the front case 1, the matching through hole 20 on the inner ring gear 2 and Corresponding to the threaded blind hole 30 on the middle box body 3, the front box body 1, the inner ring gear 2 and the middle box body 3 pass through the through hole 10, the matching through hole 20 and the threaded blind hole 30, and adopt a tension s...

AI Technical Summary

Problems solved by technology

The main defect in the connection structure of this large-scale wind power speed-up gearbox is; from figure 1 , figure 2 and image 3 It can be seen that each tension stud in the tension stud group 4 must pass through the through hole 10 on the front case 1, the matching through hole 20 on the ring gear 2 and the middle case 3 from left to right. The threaded blind hole 30, and the left end must be connected with the threaded blind hole 30 on the middle box 3, and then the nuts corresponding to the nut group 5 can be used to fix the front box 1, the inner ring gear 2 and the middle box 3. together, thus each tension stud of the tension stud group 4 is longer, thereby causing each tension stud of the tension stud group 4 to be easily deformed or even broken under dynamic load, thereby causing the front box Misalignment occurs between body 1, inner ring gear 2, and middle box body 3, which affects the power transmission between them, so that the large-scale wind power speed-up gearbox cannot operate normally, and the safety and reliability are poor

At the same time, each stretching stud of the stretching stud group 4 is longer, so that the axial length of the matching through hole 20 on the ring gear 2 is also longer, so the processing is more difficult and the efficiency is lower.

Especially as the axial width of the ring gear 2 increases, the length of the required tension stud becomes longer, and the above-mentioned defects will become more serious

Images