A sealing structure of a planetary reducer
A technology of sealing structure and sealing sleeve, which is applied in the direction of mechanical equipment, transmission parts, belts/chains/gears, etc., can solve the problems of unstable sealing effect, changing sealing effect, poor sealing effect, etc., and reduce operation and maintenance costs , Improve the sealing ability and prolong the working time
Active Publication Date: 2017-10-20
HUNAN NANFANG AVIATION HIGH ACCURATE DRIVE
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AI Technical Summary
Problems solved by technology
This single-stage sealing structure is easy to squeeze out from the junction of the single-lip sealing ring and the input gear sleeve when the oil pressure is too large and the vibration is strong. The second is this sealing structure The seal in the horizontal direction is good, but in the vertical direction, the oil is easy to leak outward along the axial direction of the gear sleeve, and the sealing effect is not good. The second is that the sealing effect of this sealing structure is changed by the change of oil pressure and other factors. Unstable effect
Method used
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[0018] The sealing structure of the planetary reducer of the present invention includes a box body 3 , an input gear sleeve 6 , an oil pipe assembly 2 and a deep groove ball bearing 10 . The input gear sleeve 6 above the deep groove ball bearing 10 is provided with an annular oil baffle 11, and the annular oil baffle 11 is provided with a mounting hole 12 and an annular sealing groove 13, and is fastened to the casing 3 with screws. The box body 3, the input gear sleeve 6 and the annular oil baffle 11 form a first-stage sealing structure. There is a gap of 5 mm between the annular oil baffle plate 11 and the casing 3 and the input gear sleeve 6, through which lubricating oil flows to lubricate the deep groove ball bearing 10.
[0019] On the input gear sleeve 6 below the deep groove ball bearing 10, a seal sleeve 1, an oil seal retaining ring 8, a single-lip seal ring 5, a double-lip seal ring 4 and a hole retaining ring 7 are arranged in sequence. The sealing sleeve 1 is com...
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The invention relates to a seal structure of a planetary speed reducer. The seal structure comprises a box body, an input gear sleeve, an oil pipe assembly and a deep groove ball bearing. The main points lie in that an annular oil baffle is arranged between the input gear sleeve above the deep groove ball bearing and the box body, and the annular oil baffle is fastened on the box body by screws; and a seal sleeve, an oil seal retainer ring, a single-lip seal ring, a double-lip seal ring and a hole retainer ring are sequentially arranged on the input gear sleeve below the deep groove ball bearing, and the oil seal retainer ring and the seal sleeve are in buckling connection through an annular groove and an annular flange on the oil seal retainer ring and the seal sleeve. The seal structure is a three-level composite seal structure formed by adopting the annular oil baffle, the seal sleeve, the oil seal retainer ring, the single-lip seal ring, the double-lip seal ring and the axial positioning of the hole retainer ring. The axial seal effect is great, and the consumption of lubricating oil is reduced. Moreover, external dust and vapor are isolated, so that lubricating oil is not polluted or oxidized. When the seal structure is used for a ship speed reducing mechanism, the running and maintenance fees of a ship can be effectively reduced, and the economy is great.
Description
technical field [0001] The invention relates to a sealing structure, in particular to a sealing structure of a planetary reducer. Background technique [0002] The sealing structure of the existing planetary reducer is sealed between the box body and the input gear sleeve through an oil seal retaining ring, an O-shaped sealing ring and a single-lip sealing ring. The oil seal retaining ring is fixed on the box body, and the O-shaped sealing ring and the single-lip sealing ring are all fixed on the oil seal retaining ring. The oil seal retaining ring blocks a large amount of lubricating oil, greatly reducing the amount of oil leaking through the gap between the oil seal retaining ring and the input gear sleeve. The O-shaped sealing ring at the back seals the gap between the box body and the oil seal retaining ring. Single lip seal The ring seals the gap between the input gear sleeve and the oil seal retaining ring. This single-stage sealing structure is easy to squeeze out f...
Claims
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IPC IPC(8): F16H57/029
CPCF16H57/029
Inventor 王会斌胡云波姚伍军
Owner HUNAN NANFANG AVIATION HIGH ACCURATE DRIVE