CN201180649Y - Main unit of screw air compressor - Google Patents
Main unit of screw air compressor Download PDFInfo
- Publication number
- CN201180649Y CN201180649Y CNU200820056840XU CN200820056840U CN201180649Y CN 201180649 Y CN201180649 Y CN 201180649Y CN U200820056840X U CNU200820056840X U CN U200820056840XU CN 200820056840 U CN200820056840 U CN 200820056840U CN 201180649 Y CN201180649 Y CN 201180649Y
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- CN
- China
- Prior art keywords
- air compressor
- screw
- main shaft
- fixed
- screw air
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a fixing structure of a main shaft in a screw air compressor mainframe and provides a screw air compressor mainframe which comprises a housing (1) and a main shaft (2) arranged inside the housing (1). The utility model is characterized in that a main shaft hole is formed on the housing (1), a fixing member (3) is arranged inside the main shaft hole, and the tail end of the main shaft (2) is inserted in the fixing member (3) and fixed on the housing (1). The screw air compressor mainframe has the advantages of simple structure, easy maintenance and convenient regulation; the positioning mode of aligning the screw to the mainframe housing in the horizontal direction is easily realized by only changing the thickness of a regulating sheet, so that the star-gear sheet inside the mainframe can run continuously and engages with the screw in the optimum position; therefore, the screw air compressor mainframe runs with excellent performance, high safety and stably and long service life.
Description
Technical field
The utility model relates to the fixed structure of the main shaft in a kind of screw air compressor main frame.
Background technique
As everyone knows, air compressor is a kind of application machinery very widely, generally comprises air compression machine host and driving device.
At present, main shaft in the conventional screw air compressor main frame is fixedlyed connected with bearing housing by being arranged on the outer bearing of main frame, as Chinese patent 03156192.6 disclosed technology, this patent comprises the fixing-assembly of an outside, thereby the internals that rotates is fixed on the main frame; The technology of Chinese patent 200410094726.2 and 200510051127.7 reports also is that the internals that rotates is fixed by the fixed component of outside for another example.
The technology of above-mentioned patent report, there is a significant defective, because the screw air compressor main frame generally needs long-time running, therefore, play before and after the connected bearing of main shaft inevitably will produce, thus cause the groove of screw rod and spider piece not to mesh with the optimum state, produce skew, quicken the wearing and tearing of spider piece, cause breaking of spider piece, cause the main frame locking so that damage.Thereby reduced the life-span of complete machine.
Summary of the invention
The purpose of this utility model provides a kind of screw air compressor main frame, to overcome the above-mentioned defective that prior art exists.
Screw air compressor main frame of the present utility model comprises shell and the main shaft that is arranged in the described shell, it is characterized in that, said shell is provided with spindle hole, be provided with fixed component in the spindle hole, the tail end of described main shaft inserts in the described fixed component, is fixed on the shell.
Screw air compressor main frame of the present utility model, structure is very simple, easy access, easy to adjust, only need to change the thickness of adjusting strip, reach the localization method of screw rod and host shell horizontal centring, make the spider piece of main frame inside can be often between running, mesh with optimum position and screw rod.Host performance is improved, and work safety is stable, the life-span is longer.
Description of drawings
Fig. 1 is a screw air compressor main machine structure schematic representation.
Fig. 2 is the fixed component structural representation.
Embodiment
Referring to Fig. 1, screw air compressor main frame of the present utility model, comprise shell 1 and the main shaft 2 that is arranged in the described shell 1, it is characterized in that, said shell 1 is provided with spindle hole, be provided with fixed component 3 in the spindle hole, the tail end of described main shaft 2 inserts in the described fixed component 3, is fixed on the shell 1;
Referring to Fig. 2, described fixed component 3 comprises:
Be fixed on the bearing support 301 in the spindle hole;
Be fixed on first back-up ring 303 on bearing support 301 1 ends by first link 302;
The shaft shoulder by main shaft 2 is fixed on second back-up ring 305 on the main shaft 2;
Be arranged on the back-to-back bearing 306 between first back-up ring 303 and second back-up ring 305, one side of described back-to-back bearing 306 and bearing support 301 are fixed by bearing support 301 inner chamber body, be provided with the 3rd back-up ring 307 between the end of described back-to-back bearing 306 and main shaft 2, one end of the 3rd back-up ring 307 is provided with set screw nut 304, is used for fixing the 3rd back-up ring 307; By cooperating of second back-up ring 305 and the 3rd back-up ring 307, bearing and main shaft to be fixed, bearing inner race and main shaft are interference fit, and bearing is fixed on the main shaft stably.
Further, described first link 302 is a screw;
Further, described bearing support 301 on shell 1, is provided with adjusting strip 313 between bearing support 301 and the shell 1 by screw, utilize the thickness of adjusting strip, come the centering position of adjusting screw rod, make spider piece and screw rod finish air-breathing with the engaging position of the best in level, compression, the process of exhaust.
Further, referring to Fig. 1, shell 1 place outside spindle hole is fixed with the front cover of outwards heaving 4;
Further, on front cover 4, be provided with jet 401, be provided with joint in the described jet 401, oil can be lubricated back-to-back bearing 306.
Further, described front cover 4 is fixed on the shell 1 by end cap screw 402.
Described back-to-back bearing 306 is a kind of general accessory, and its structure has detailed description on mechanical design handbook.
Claims (7)
1. screw air compressor main frame, comprise shell (1) and be arranged on main shaft (2) in the described shell (1), it is characterized in that, said shell (1) is provided with spindle hole, be provided with fixed component (3) in the spindle hole, the tail end of described screw rod (2) inserts in the described fixed component (3), is fixed on the shell (1).
2. screw air compressor main frame according to claim 1 is characterized in that, described fixed component (3) comprising:
Be fixed on the bearing support (301) in the spindle hole;
Be fixed on first back-up ring (303) on bearing support (301) one ends by first link (302);
Be fixed on second back-up ring (305) on the main shaft (2) by the main shaft shaft shoulder;
Be arranged on the back-to-back bearing (306) between first back-up ring (303) and second back-up ring (305), one side of described back-to-back bearing (306) and bearing support (301) inner chamber body are fixed, be provided with the 3rd back-up ring (307) between the end of described back-to-back bearing (306) and main shaft (2), one end of the 3rd back-up ring (307) is provided with set screw nut (304), by cooperating of second back-up ring (305) and the 3rd back-up ring (307), bearing and main shaft are fixed, and bearing inner race and main shaft are interference fit.
3. screw air compressor main frame according to claim 2 is characterized in that, described first link (302) is a screw.
4. screw air compressor main frame according to claim 2 is characterized in that, described bearing support (301) on shell (1), is provided with adjusting strip (313) by screw between bearing support 301 and the shell (1).
5. according to each described screw air compressor main frame of claim 1～4, it is characterized in that the shell outside spindle hole (1) is located, be fixed with the front cover (4) that outwards swells.
6. screw air compressor main frame according to claim 5 is characterized in that, is provided with jet (401) on front cover (4), and described jet is provided with joint in (401).
7. screw air compressor main frame according to claim 5 is characterized in that, described front cover (4) passes through the end cap screw on shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820056840XU CN201180649Y (en) | 2008-04-01 | 2008-04-01 | Main unit of screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820056840XU CN201180649Y (en) | 2008-04-01 | 2008-04-01 | Main unit of screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180649Y true CN201180649Y (en) | 2009-01-14 |
Family
ID=40250149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820056840XU Expired - Fee Related CN201180649Y (en) | 2008-04-01 | 2008-04-01 | Main unit of screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180649Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691658A (en) * | 2012-06-11 | 2012-09-26 | 苏州普度压缩机有限公司 | Screw rod air compressor with working windows |
-
2008
- 2008-04-01 CN CNU200820056840XU patent/CN201180649Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691658A (en) * | 2012-06-11 | 2012-09-26 | 苏州普度压缩机有限公司 | Screw rod air compressor with working windows |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI LINUO PRECISION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI SCHNEIDER-SUNSHINE MACHINERY (GROUP) CO., LTD. Effective date: 20140710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200949 BAOSHAN, SHANGHAI TO: 201900 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140710 Address after: 201900 Shanghai District, Baoshan District, Shanghai Road, No. 3, district 9088, A459 Patentee after: Shanghai Linuo Precision Technology Co. Ltd. Address before: 200949 Shanghai City, Baoshan District Fanlu Shanghai No. 53 Building 1 Patentee before: Shanghai Schneider0Sunshine Machinery Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20160401 |