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Non-contact seal device for high-speed shaft of gear speed reducer

A gear reduction, non-contact technology, applied in the direction of engine seals, transmission parts, belts/chains/gears, etc., can solve the problems of heavy replacement workload, long maintenance time, and shutdown losses, etc., to achieve low cost, The effect of avoiding downtime loss and reliable sealing effect

Active Publication Date: 2014-09-24
JIANGSU JINWO MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The workload of the replacement is large, the maintenance time is long, and it will cause downtime losses

Method used

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  • Non-contact seal device for high-speed shaft of gear speed reducer
  • Non-contact seal device for high-speed shaft of gear speed reducer
  • Non-contact seal device for high-speed shaft of gear speed reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment: The non-contact sealing device for the high-speed shaft of the gear reducer in this embodiment is as follows figure 1 and figure 2 As shown, it includes half coupling 1, key 2, high-speed shaft 3, sealing ring 4, transparent cover 5, static ring 6, moving ring 7, oil drain groove 8, gear reducer casing 9 and bearing sleeve 10. The coupling half 1 is fixedly connected to the input end of the high-speed shaft 3 through the key 2, and the bearing sleeve 10 is fixed on the gear reducer casing 9. The high-speed shaft 3 passes through the opening on the transparent cover 3, and the outer cylindrical surface of the sealing ring 4 has multiple annular grooves, and is mounted on the high-speed shaft 3 by interference fit or transition fit. The through cover 5 is fastened to the outer end surface of the bearing sleeve 10 by bolts, and the openings on the sealing ring 4 and the through cover 5 have a small radial fit gap, forming a radial labyrinth seal structure. T...

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Abstract

The invention discloses a non-contact seal device for a high-speed shaft of a gear speed reducer. The non-contact seal device comprises the high-speed shaft, a sealing ring, a transparent cover, a static ring, a dynamic ring, an oil leakage groove, a bearing and a bearing sleeve. The bearing is arranged in the bearing sleeve, the transparent cover is fixedly connected to the outer end of the bearing sleeve and is provided with a lower edge stretching into the bearing sleeve, the static ring is arranged between the lower edge and the bearing in a pressing mode, the dynamic ring is fixedly connected to the high-speed shaft, and an axial labyrinth is formed by the static ring and the dynamic ring. The sealing ring is fixedly connected to the high-speed shaft, a ring groove is formed in the peripheral wall of the sealing ring, a radial labyrinth is formed by the sealing ring and an opening of the transparent cover, a cavity is formed between the radial labyrinth and the axial labyrinth, the axial oil leakage groove is formed in the lower edge and the inner wall of the bearing sleeve, and the oil leakage groove is communicated with the cavity and the inner portion of a box. The non-contact seal device is simple in mechanical structure, easy to machine and assemble, low in cost and capable of achieving the reliable sealing effect.

Description

technical field [0001] The invention relates to a shaft sealing device, in particular to a non-contact sealing device for a high-speed shaft of a gear reducer. Background technique [0002] The wheel reducer is widely used as a gear transmission device. Through the design of different gear reduction ratio parameters, it can meet the operating speed requirements of the driven working mechanism. Its input shaft is generally connected to the output shaft of the prime mover of the motor (or hydraulic motor, etc.) through a coupling, and the speed is relatively high, commonly known as the high-speed shaft. [0003] The high-speed shaft is supported by bearings at both ends, and the bearings are lubricated with lubricating oil. In order to prevent the leakage of lubricating oil, a sealing mechanism is required at the connection end with the output shaft of the prime mover. The sealing structure generally adopts a contact seal composed of a rubber rotary seal ring (oil seal) and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/029F16J15/447
CPCF16H57/029
Inventor 曹堪洲范刚华徐涛
Owner JIANGSU JINWO MACHINERY
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