Wear-resistant shaft sleeve structure for sealing speed reducer

Abstract

The wear-resistant shaft sleeve structure comprises a shaft sleeve body, the diameter of the outer periphery of the left side portion of the shaft sleeve body is 4 mm smaller than that of the outer periphery of the right side portion of the shaft sleeve body, the length C of the outer periphery of the right side portion of the shaft sleeve body is 70-90 mm, and the quenching depth of the right side portion is 1-1.5 mm; an annular shoulder transition face B is arranged in the middle of the outer periphery of the shaft sleeve body, the left side and the right side of the shaft sleeve body are each internally provided with a necking hole A, the diameter phi of the two necking holes is 120 mm, the upper deviation + 0.055 mm and the lower deviation + 0.025 mm are interference fit sections, the width of the two necking holes is 20 mm, and the diameter phi of the two necking holes is 20 mm. And a section of annular machining cutter groove D with the depth of 0.5 mm is formed in the shaft sleeve body between the two necking holes, and the width of the annular machining cutter groove D is 70-90 mm.

Description

Technical field

[0001] The present invention relates to a wear-resistant ax sleeve structure for a reduction in a gear. Background technique

[0002] Usually the speed reducer input, the output and the passage portion uses a sealing structure such as a skeleton oil seal, sealing the oil felt seal, and the seal and the high-speed input and low-speed output shaft are directly in contact. If there is no special design requirements, the reducer manufacturing manufacturer usually Do not use the installed detachable replacement sleeve design, the receiver input and output shaft and the oil seal cannot be repaired after wear, the sealing effect continues to deteriorate, and finally cause a large amount of leakage, and the sealing failure will only replace the maintenance. There is increased maintenance cost of spare parts. The main problems are as follows: The speed rotation high speed axis is rotated, the oil seal is generated relative to the axis, and the friction is caused by the wea...

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