Leakproof structure used for shaft end of transmission shaft of reducer

Abstract

The invention discloses a leakproof structure used for a shaft end of a transmission shaft of a reducer. The transmission shaft is installed on a bearing block of the reducer through a bearing, the leakproof structure comprises a sealing ring, the sealing ring is installed at the shaft end of the transmission shaft, an inner ring and an outer ring of the sealing ring are tightly attached to the transmission shaft and the bearing block, the interior and the exterior of the sealing ring are provided with spiral oil stopping grooves, the leakproof structure further comprises a first oil return way, and the first oil return way is close to the inner side of the sealing ring and penetrates the bearing block to be communicated with an oil tank of the reducer. The leakproof structure has the beneficial effects that the reliability is high, the maintaining cost is low, and oil leakage can be prevented.

Description

technical field [0001] The invention mainly relates to the shaft end sealing technology of the transmission shaft of the reducer, in particular to a sealing structure for the shaft end of the transmission shaft of the reducer. Background technique [0002] The seal of the input and output shafts of the reducer generally adopts a packing seal structure, such as a packing seal structure, which uses two graphite-type packings installed in a staggered manner, and is equipped with an adjustment and compression device. When in use, in order to prevent the packing from moving, the packing should be properly pressed. However, since the sealing structure does not use a special cooling device, if the packing is pressed tightly, it will cause an abnormal temperature rise at the seal (the temperature at this place can reach above 160°C), and cause accelerated wear of the packing; if it is not pressed tightly, the packing will It will move radially, which will quickly cause the two pack...

AI Technical Summary

Problems solved by technology

However, since the sealing structure does not use a special cooling device, if the packing is pressed tightly, it will cause an abnormal temperature rise at the seal (the temperature at this place can reach above 160°C), and cause accelerated wear of the packing; if it is not pressed tightly, the packing will It will move radially, which will soon cause the two packing joints to overlap, and it will be the easiest to stop at the bottom (where the resistance is the largest), resulting in poor oil sealing, making it easy for oil to leak out from the joints

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