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Waterproof structure on output shaft of speed reducer and speed reducer

A waterproof structure and output shaft technology, which is applied in the direction of mechanical equipment, transmission parts, belts/chains/gears, etc., can solve the problems of box structure rigidity reduction, safety accidents, water corrosion, etc., to eliminate potential safety hazards and prolong service life Lifespan, to ensure the effect of normal use

Pending Publication Date: 2019-09-13
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The exposed parts of the box body of the reducer and other transmission parts can be waterproofed by applying waterproof paint, etc., but there is no structure in the prior art to prevent water from entering the box body from between the end cover and the output shaft. It is easy to penetrate into the box of the reducer, causing serious water corrosion on the bearings, gears, shafts, and the inner wall of the box. Long-term use may even lead to a decrease in the structural rigidity of the box and its interior, resulting in safety accidents

Method used

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  • Waterproof structure on output shaft of speed reducer and speed reducer
  • Waterproof structure on output shaft of speed reducer and speed reducer
  • Waterproof structure on output shaft of speed reducer and speed reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, a waterproof structure at the output shaft of a reducer includes a vertical output shaft 1 and an upper end cover 21, the output shaft 1 passes through the upper end cover 21, the upper end of the output shaft 1 is exposed to the upper end cover 21, and the upper end cover 21 An oil seal 211 is embedded in the inner wall of the shaft, and the part of the output shaft 1 exposed to the upper end cover 21 is sleeved with a circular water throwing pan 31 .

[0024] The part of the output shaft 1 exposed to the upper end cover 21 is provided with an external thread section 11, and a round nut 4 is threaded on the external thread section 11. An O-ring seal 5 is sandwiched between the round nut 4 and the external thread section 11. The output shaft 1 The position below the outer thread section 11 on the outside is fixedly sleeved with a wear-resistant bushing 6 , and the water thrower 31 is clamped between the round nut 4 and the wear-resistant bushi...

Embodiment 2

[0028] This embodiment is improved on the basis of the first embodiment. Such as figure 2 As shown, a cylindrical water retaining ring 32 coaxially extends downward from the outer edge of the water throwing pan 31 . The water retaining ring 32 and the water throwing pan 31 of this embodiment are welded together in a full welded manner, so that a sealing effect can be achieved at the junction of the water retaining ring 32 and the water throwing pan 31 . In other embodiments, the water retaining ring and the water throwing pan 31 can also be integrally processed and formed. The water retaining ring 32 can increase the shielding area three-dimensionally, further enhancing the waterproof effect.

[0029] The top of the upper end cover 21 in this embodiment extends upwards a cylindrical isolation tube 22, the isolation tube 22 is coaxial with the inner circular hole of the upper end cover 21, the isolation tube 22 is inserted into the water retaining ring 32, and the isolation ...

Embodiment 3

[0034] Such as image 3 with Figure 4 As shown, this embodiment introduces a reducer using the waterproof structure in Embodiment 2, including a box body 91, a horizontal input shaft 92, a vertical intermediate transmission shaft 93, a vertical first output shaft 94 and a first vertical output shaft 94. Two output shafts 95. The input shaft 92 , the intermediate transmission shaft 93 , the first output shaft 94 and the second output shaft 95 are respectively rotatably connected to the casing 91 through rolling bearings. The input shaft 92 and the intermediate transmission shaft 93 are connected by a pair of bevel gears, the intermediate transmission shaft 93 and the first output shaft 94 are connected by a pair of helical gears, and the first output shaft 94 and the second output shaft 95 are connected by a pair of helical gears. Drive connection. The output ends of the first output shaft 94 and the second output shaft 95 are all located above the box body 91, and the two ...

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Abstract

The invention relates to the technical field of transmission devices, and discloses a waterproof structure on an output shaft of a speed reducer and the speed reducer, wherein the waterproof structureon the output shaft of the speed reducer comprises a vertical output shaft and an upper end cover; the output shaft penetrates through the upper end cover; the upper end of the output shaft is exposed out of the upper end surface; and an annular water throwing disc tightly sleeves the part, exposed out of the upper end cover, of the output shaft. The water throwing disc is used for shielding theposition of the upper end cover penetrated by the output shaft to prevent water from directly falling in a matching place between the output shaft and the upper end cover; and the output shaft generates centrifugal force on the water falling on the water throwing disc during quickly rotating to prevent the water from permeating into a box body from the matching place between the output shaft and the upper end cover, so that the effective waterproof effect is achieved, the normal use and the lubricating effect of the speed reducer are guaranteed, the rusting of a bearing, a gear, the rotating shaft and the inner wall of the box body is prevented, the service life is prolonged, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of transmission devices, and more particularly relates to a waterproof structure at an output shaft of a reducer and a reducer. Background technique [0002] A reducer, also known as a reduction box or reducer, is a commonly used transmission device. The output end of the reducer can be designed at the bottom, top and side of the reducer box according to the requirements of use. When the output end of the reducer is arranged on the side of the box, the output shaft of the reducer is usually arranged horizontally. When the output end of the reducer is arranged below or above the box, the output shaft of the reducer is usually arranged vertically. The position where the output shaft passes through the box body is usually equipped with an end cover. The output shaft passes through the end cover so that the output end is exposed to the end cover. The end cover can be used to compress the bearing. An oil seal i...

Claims

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Application Information

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IPC IPC(8): F16H57/029
CPCF16H57/029
Inventor 康少博张坤许建忠阮文浩聂熙张浩
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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