CN202371169U - Sealing device for transmission shaft of speed reducer - Google Patents

Sealing device for transmission shaft of speed reducer Download PDF

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Publication number
CN202371169U
CN202371169U CN2011204757385U CN201120475738U CN202371169U CN 202371169 U CN202371169 U CN 202371169U CN 2011204757385 U CN2011204757385 U CN 2011204757385U CN 201120475738 U CN201120475738 U CN 201120475738U CN 202371169 U CN202371169 U CN 202371169U
Authority
CN
China
Prior art keywords
transmission shaft
oil
oil seal
cover
framework oil
Prior art date
Application number
CN2011204757385U
Other languages
Chinese (zh)
Inventor
崔平华
徐华
Original Assignee
益阳益橡传动机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 益阳益橡传动机械有限公司 filed Critical 益阳益橡传动机械有限公司
Priority to CN2011204757385U priority Critical patent/CN202371169U/en
Application granted granted Critical
Publication of CN202371169U publication Critical patent/CN202371169U/en

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Abstract

The utility model discloses a sealing device for a transmission shaft of a speed reducer. The device has high sealing performance and comprises a bearing (1), an adjusting ring (3) and a transparent cover (4) which are arranged on the transmission shaft (7), wherein a front end cover (6) is arranged on a body (12) through a seam allowance; a lubricating oil cavity (2) is formed between the adjusting ring (3) and the transmission shaft (7); a framework oil seal (5) is arranged between the transparent cover (4) and the transmission shaft (7); and an oil return cavity (8) is formed between the front end cover (6) and the transmission shaft (7). The device is characterized in that the lubricating oil cavity (2) is communicated with the oil return cavity (8) through the framework oil seal (5); and an oil return pipe (11) communicated with the oil return cavity (8) is arranged on the body (12). The device has a simple structure, is convenient to manufacture and is economic and durable; the service life of the framework oil seal is prolonged, and a little oil which leaks after the framework oil seal is used for a long time and worn can be splashed through the rotation of an oil baffle ring and the transmission shaft and timely flows back to an oil tank through the oil return cavity on the front end cover; and meanwhile, a framework oil seal detaching hole is added, so that the framework oil seal is conveniently and quickly replaced.

Description

The speed reducer sealed device for drive-shaft
Technical field
The utility model relates to a kind of speed reducer, and specifically a kind of speed reducer sealed device for drive-shaft particularly relates to a kind of low-speed heave-load speed reducer sealed device for drive-shaft.
Background technique
Running shaft lip or single lipstick frame oil sealing or joyous lipstick frame oil sealing are adopted in the sealing of the transmission shaft of tradition speed reducer usually; After using after a while, transmission shaft front cover oil leakage phenomenon more or less can appear.Also have and adopt the mechanical type annular groove to seal, but physical dimension is bigger, the axle external part is longer, and manufacture cost is high.
Summary of the invention
The purpose of the utility model provides a kind of speed reducer sealed device for drive-shaft of good seal performance.
The utility model is to adopt following technological scheme to realize its goal of the invention, a kind of speed reducer sealed device for drive-shaft, and it comprises that the bearing, the adjustment that are installed on the transmission shaft encircle, pass through lid; Front cover is installed on the body through seam; Form lubricant reservoir between adjustment ring and the transmission shaft, pass through between lid and the transmission shaft outside framework oil seal is installed, form oil back chamber between front cover and the transmission shaft; Said lubricant reservoir is communicated with oil back chamber through outside framework oil seal, and body is provided with the return tube that is communicated with oil back chamber.
The utility model transmission shaft is provided with the oil blocking ring that is installed between outside framework oil seal and the oil back chamber.
The utility model covers thoroughly and is provided with the outside framework oil seal removal hole.
Because adopt technique scheme, the utility model has been realized goal of the invention preferably, it is simple in structure, and is easily manufactured, economy and durability; Because the pressure of lubricant reservoir; Pulling force in conjunction with the outside framework oil seal spring ring makes the outside framework oil seal labial surface be close to transmission shaft all the time, makes the transmission shaft surface produce thin oil film rigidity, thereby has reduced the wearing and tearing of outside framework oil seal; Prolonged the working life of outside framework oil seal; Outside framework oil seal uses a small amount of leakage of oil after the wearing and tearing for a long time, can splash through the rotation of oil blocking ring and transmission shaft, in time flows back to fuel tank through the oil back chamber on the front cover; Simultaneously, increase the outside framework oil seal removal hole, changed the convenient agility of outside framework oil seal.
Description of drawings
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Can be known that by Fig. 1 because lubricant reservoir 2 splits with outside framework oil seal 5, outside framework oil seal 5 only depends on the pulling force of spring ring to make outside framework oil seal 5 labial surfaces be close to transmission shaft 7 all the time, outside framework oil seal 5 is easy to wear, causes front cover 6 oil leakage phenomenons to take place.
Can know by Fig. 2, a kind of speed reducer sealed device for drive-shaft, it comprises that the bearing 1, the adjustment that are installed on the transmission shaft 7 encircle 3, cover 4 thoroughly; Front cover 6 is installed on the body 12 through seam; Form lubricant reservoir 2 between adjustment ring 3 and the transmission shaft 7, cover thoroughly 4 and transmission shaft 7 between outside framework oil seal 5 is installed, formation oil back chamber 8 between front cover 6 and the transmission shaft 7; Said lubricant reservoir 2 is communicated with oil back chamber 8 through outside framework oil seal 5, and body 12 is provided with the return tube 11 that is communicated with oil back chamber 8.
The utility model transmission shaft 7 is provided with the oil blocking ring 9 that is installed between outside framework oil seal 5 and the oil back chamber 8.
The utility model covers 4 thoroughly and is provided with outside framework oil seal removal hole 10.
When the utility model uses, because the pressure of lubricant reservoir 2, make outside framework oil seal 5 labial surfaces be close to transmission shaft 7 all the time in conjunction with the pulling force of outside framework oil seal 5 spring rings; Make transmission shaft 7 surfaces produce thin oil film rigidity; Thereby reduced the wearing and tearing of outside framework oil seal 5, prolonged the working life of outside framework oil seal 5, outside framework oil seal 5 long-term a small amount of leakage of oils of using after wearing and tearing; Can splash through the rotation of oil blocking ring 9 and transmission shaft 7, in time flow back to fuel tank through the oil back chamber on the front cover 68; Simultaneously, increased outside framework oil seal removal hole 10, the convenient agility of the replacing of outside framework oil seal 5.

Claims (3)

1. speed reducer sealed device for drive-shaft; It comprises that the bearing (1), the adjustment that are installed on the transmission shaft (7) encircle (3), pass through lid (4); Front cover (6) is installed on the body (12) through seam; Form lubricant reservoir (2) between adjustment ring (3) and the transmission shaft (7), pass through between lid (4) and the transmission shaft (7) outside framework oil seal (5) is installed, form oil back chamber (8) between front cover (6) and the transmission shaft (7); It is characterized in that said lubricant reservoir (2) is communicated with oil back chamber (8) through outside framework oil seal (5), body (12) is provided with the return tube (11) that is communicated with oil back chamber (8).
2. speed reducer sealed device for drive-shaft according to claim 1 is characterized in that transmission shaft (7) is provided with the oil blocking ring (9) that is installed between outside framework oil seal (5) and the oil back chamber (8).
3. speed reducer sealed device for drive-shaft according to claim 1 and 2 is characterized in that lid (4) is provided with outside framework oil seal removal hole (10).
CN2011204757385U 2011-11-25 2011-11-25 Sealing device for transmission shaft of speed reducer CN202371169U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204757385U CN202371169U (en) 2011-11-25 2011-11-25 Sealing device for transmission shaft of speed reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204757385U CN202371169U (en) 2011-11-25 2011-11-25 Sealing device for transmission shaft of speed reducer

Publications (1)

Publication Number Publication Date
CN202371169U true CN202371169U (en) 2012-08-08

Family

ID=46594873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204757385U CN202371169U (en) 2011-11-25 2011-11-25 Sealing device for transmission shaft of speed reducer

Country Status (1)

Country Link
CN (1) CN202371169U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954195A (en) * 2012-11-14 2013-03-06 经纬纺织机械股份有限公司 Oil return structure of part of mechanical box body
CN103090009A (en) * 2013-02-05 2013-05-08 陈义华 Pneumatic sealing device of pulverizer
CN103867691A (en) * 2014-04-15 2014-06-18 郑州机械研究所 Shaft-end seal and oil return structure of gear box
CN104879479A (en) * 2015-05-18 2015-09-02 江苏泰隆减速机股份有限公司 Double-layer leakage-free end cover
CN108626359A (en) * 2018-03-28 2018-10-09 江苏泰隆减速机股份有限公司 The three-in-one sealing device of axis

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954195A (en) * 2012-11-14 2013-03-06 经纬纺织机械股份有限公司 Oil return structure of part of mechanical box body
CN103090009A (en) * 2013-02-05 2013-05-08 陈义华 Pneumatic sealing device of pulverizer
CN103867691A (en) * 2014-04-15 2014-06-18 郑州机械研究所 Shaft-end seal and oil return structure of gear box
CN104879479A (en) * 2015-05-18 2015-09-02 江苏泰隆减速机股份有限公司 Double-layer leakage-free end cover
CN108626359A (en) * 2018-03-28 2018-10-09 江苏泰隆减速机股份有限公司 The three-in-one sealing device of axis

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120808

Termination date: 20141125

EXPY Termination of patent right or utility model