CN102979915A - Novel multihole circulation air-tight seal structure of main shaft - Google Patents
Novel multihole circulation air-tight seal structure of main shaft Download PDFInfo
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- CN102979915A CN102979915A CN2012105183438A CN201210518343A CN102979915A CN 102979915 A CN102979915 A CN 102979915A CN 2012105183438 A CN2012105183438 A CN 2012105183438A CN 201210518343 A CN201210518343 A CN 201210518343A CN 102979915 A CN102979915 A CN 102979915A
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- air
- main shaft
- nut
- seal structure
- tight
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Abstract
The invention discloses a novel multihole circulation air-tight seal structure of a main shaft. The novel multihole circulation air-tight seal structure of the main shaft comprises a front bearing housing, wherein the front bearing housing is installed on the end part of a rotor shaft; the end part of the rotor shaft is connected by a nut; an air-tight cushion is arranged between the nut and the front bearing housing; the air-tight cushion is located on the outer side of the front bearing housing; a plurality of evenly-distributed air holes are formed in the circumference of the air-tight cushion; the end part of the nut extends towards four sidesthe periphery for the formation of an end cover; the end cover covers the air holes; and circular downward-concave steps are formed on the air-tight cushion at an exits of the air holes and on the front bearing housing. With the adoption of the structure, thea gap between the front end nut and the air-tight cushion is controlled, and a circular air cavity is formed between the nut and the air-tight cushion; in addition, the novel multihole circulation air-tight seal structure of the main shaft has the main characteristics that since the gap of the head end face of the main shaft is strictly controlled and the circular air cavity blows, a complete air curtain protection is formed for effective prevention on the invasion of impurities; and therefore, the novel multihole circulation air-tight seal structure of the main shaft is a quite good seal structure.
Description
Technical field
The present invention relates to a kind of air-tight structure of electric main shaft.
Background technique
The present invention is a kind of compound sealed dustproof structure that aims at electric spindle design, because electric main shaft Environmental Conditions is comparatively abominable, the impurity such as a large amount of water smoke, dust is arranged, and enters easily front step bearing, has a strong impact on the working life of electric main shaft.
Summary of the invention
Comparatively abominable for solving electric main shaft Environmental Conditions, the impurity such as a large amount of water smoke, dust are arranged, enter easily front step bearing, have a strong impact on the problem in the working life of main shaft, the present invention designs the novel porous circulation air-tight structure of a kind of main shaft.
Purpose of the present invention is come specific implementation by the following technical programs:
The novel porous circulation air-tight structure of main shaft, comprise the fore bearing chamber that is installed in the rotor shaft end, described rotor shaft end connects by nut, between nut and fore bearing chamber, be provided with the sealing gland pad, described sealing gland pad is positioned at the outside of fore bearing chamber, the circumference of described sealing gland pad is provided with several uniform pores, described pore is parallel with rotor shaft or be an inclination angle, the end of described nut to around extend to form end cap, described end cap covers several described pores, the sealing gland pad in described pore outlet port and fore bearing chamber are provided with the recessed ledge frame of ring-type, so that between described sealing gland pad and the end cap, form the air cavity of annular between sealing gland pad and the fore bearing chamber.
This structure adopts control front end nut and sealing gland pad gap; and between nut and sealing gland pad, form an annular air cavity; its main feature is: because main shaft Shou Dao end clearance is strictly controlled; adding an annular air cavity blows; form a complete air curtain protection; effectively having stopped the intrusion of impurity, is a kind of good sealing configuration.
Description of drawings
The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing of the novel porous circulation air-tight structure of the described main shaft of the embodiment of the invention.
Fig. 2 is the lateral plan of sealing gland pad and fore bearing chamber.
Embodiment
Shown in Fig. 1-2, the novel porous circulation air-tight structure of the described main shaft of the embodiment of the invention, comprise the fore bearing chamber 2 that is installed in rotor shaft 1 end, described rotor shaft 1 end connects by nut 3, between nut 3 and fore bearing chamber 2, be provided with sealing gland pad 4, described sealing gland pad 4 is positioned at the outside of fore bearing chamber 2, the circumference of described sealing gland pad 4 is provided with several uniform pores 5, described pore 5 and rotor shaft 1 are parallel or be an inclination angle, the end of described nut 3 to around extend to form end cap, described end cap covers several described pores 5, the recessed ledge frame that the sealing gland pad 4 in described pore 5 outlet ports and fore bearing chamber 2 are provided with ring-type is so that between described sealing gland pad 4 and the end cap, form the air cavity of annular between sealing gland pad 4 and the fore bearing chamber 2.
This structure adopts control front end nut and sealing gland pad gap; and between nut and sealing gland pad, form an annular air cavity; its main feature is: because main shaft Shou Dao end clearance is strictly controlled; adding an annular air cavity blows; form a complete air curtain protection; effectively having stopped the intrusion of impurity, is a kind of good sealing configuration.
Claims (1)
1. the novel porous circulation air-tight structure of main shaft, comprise the fore bearing chamber that is installed in the rotor shaft end, it is characterized in that, described rotor shaft end connects by nut, between nut and fore bearing chamber, be provided with the sealing gland pad, described sealing gland pad is positioned at the outside of fore bearing chamber, the circumference of described sealing gland pad is provided with several uniform pores, described pore is parallel with rotor shaft or be an inclination angle, the end of described nut to around extend to form end cap, described end cap covers several described pores, the sealing gland pad in described pore outlet port and fore bearing chamber are provided with the recessed ledge frame of ring-type, so that between described sealing gland pad and the end cap, form the air cavity of annular between sealing gland pad and the fore bearing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105183438A CN102979915A (en) | 2012-12-06 | 2012-12-06 | Novel multihole circulation air-tight seal structure of main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105183438A CN102979915A (en) | 2012-12-06 | 2012-12-06 | Novel multihole circulation air-tight seal structure of main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102979915A true CN102979915A (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105183438A Pending CN102979915A (en) | 2012-12-06 | 2012-12-06 | Novel multihole circulation air-tight seal structure of main shaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN102979915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814879A (en) * | 2019-11-07 | 2020-02-21 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
| CN111112653A (en) * | 2019-12-23 | 2020-05-08 | 广州市昊志机电股份有限公司 | Dustproof electric spindle structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001241555A (en) * | 2000-02-29 | 2001-09-07 | Nsk Ltd | Spindle |
| US20030178783A1 (en) * | 2001-08-16 | 2003-09-25 | Langston Todd A. | Non-contacting clearance seal for high misalignment applications |
| CN101216112A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Straight-through type non-contact hermetic sealing structural design for grease lubricating bearing |
| CN101478190A (en) * | 2008-12-30 | 2009-07-08 | 洛阳轴研科技股份有限公司 | Air sealing construct design for electric main shaft of oil grease mill |
| CN201836393U (en) * | 2010-11-04 | 2011-05-18 | 北京精雕精密机械制造有限公司 | Shaft end sealing device of vertical electric main shaft |
| CN202946687U (en) * | 2012-12-06 | 2013-05-22 | 无锡博华机电有限公司 | Novel porous circulation air sealing structure for main shaft |
-
2012
- 2012-12-06 CN CN2012105183438A patent/CN102979915A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001241555A (en) * | 2000-02-29 | 2001-09-07 | Nsk Ltd | Spindle |
| US20030178783A1 (en) * | 2001-08-16 | 2003-09-25 | Langston Todd A. | Non-contacting clearance seal for high misalignment applications |
| CN101216112A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Straight-through type non-contact hermetic sealing structural design for grease lubricating bearing |
| CN101478190A (en) * | 2008-12-30 | 2009-07-08 | 洛阳轴研科技股份有限公司 | Air sealing construct design for electric main shaft of oil grease mill |
| CN201836393U (en) * | 2010-11-04 | 2011-05-18 | 北京精雕精密机械制造有限公司 | Shaft end sealing device of vertical electric main shaft |
| CN202946687U (en) * | 2012-12-06 | 2013-05-22 | 无锡博华机电有限公司 | Novel porous circulation air sealing structure for main shaft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814879A (en) * | 2019-11-07 | 2020-02-21 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
| CN110814879B (en) * | 2019-11-07 | 2022-03-11 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
| CN111112653A (en) * | 2019-12-23 | 2020-05-08 | 广州市昊志机电股份有限公司 | Dustproof electric spindle structure |
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Application publication date: 20130320 |