CN102678567A - Screw axial adjustment mechanism for single-screw compressor - Google Patents
Screw axial adjustment mechanism for single-screw compressor Download PDFInfo
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- CN102678567A CN102678567A CN2012100238504A CN201210023850A CN102678567A CN 102678567 A CN102678567 A CN 102678567A CN 2012100238504 A CN2012100238504 A CN 2012100238504A CN 201210023850 A CN201210023850 A CN 201210023850A CN 102678567 A CN102678567 A CN 102678567A
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- screw
- angular contact
- bearing
- locking nut
- compressor
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Abstract
The invention discloses a screw axial adjustment mechanism for a single-screw compressor, which comprises a spindle (1) of the single-screw compressor, a screw (2) is fixed on the spindle (1), bearing seats are respectively arranged at two sides of the spindle (1), one end of the spindle (1) is connected with a UN-shaped cylindrical roller bearing (3), the other end of the bearing is connected with a pair of duplex angular contact bearings (4), and the inner ring of the angular contact bearings (4) is fixed by a locknut.. For convenient location and adjustment of the screw, two sides of the inner ring of the angular contact bearing are respectively connected with the locknut for fixing, so that double nuts replace a correcting sheet for regulation, when in assemble, the correcting sheet has no need of coping, therefore, adjustment becomes simple and easy, and assembling efficiency is improved; and after service staff can easily adjust the axial size of the screw from the exteriority of the compressor.
Description
Technical field
The present invention relates to a kind of screw axial regulating mechanism of single screw compressor, belong to the single screw compressor field.
Background technique
Because during the assembling of single screw compressor main frame, the relative positional accuracy requirement between star-wheel and the screw rod is high, the position at star-wheel gyration center and screw channel center also must accurately measured and adjust to processing key spare except satisfying higher precision.The position at existing adjustment star-wheel gyration center and screw channel center is to regulate through the relative position that the reconditioning trim tab is adjusted between bearing support and the casing.There is following shortcoming in this mechanism:
1, efficiency of assembling is low: the size value that each assembling all will be passed through the central position of accurate measurement star-wheel gyration center and screw channel, carry out reconditioning to this trim tab, again because the error of measuring; Often need be through twice above repetitive operation; The trim tab outside dimension is than big and thin, and the both ends of the surface parallelism requires high, necessary grinding; Have the expense material, take a lot of work, require great effort, working efficiency is lower.
2, after-sales service difficulty: if the situation that main frame main shaft axial position changes appears in compressor at the user job scene; When readjusting the screw rod center; Must change the thickness of adjustment trim tab; When personnel carry out maintenance work outside after sale,, bring big difficulty to maintenance often because of the field condition restriction.
Summary of the invention
The technical problem that the present invention will solve provides a kind of axial position adjustment that can make screw rod and accomplishes efficiently, accurately, improves the screw axial regulating mechanism of single screw compressor of work efficiency and the quality of product, can overcome the deficiency of existing technology.
Technological scheme of the present invention is: it comprises the main shaft of single screw compressor; On main shaft, be fixed with screw rod; Both sides at main shaft 1 are respectively equipped with bearing support; End at main shaft is connected with UN type roller bearing, is connected with the angular contact bearing that paired duplex is installed at the other end of bearing, and the inner ring of angular contact bearing is fixed by locking nut.
Angular contact bearing is positioned at the suction end of compressor host.
The locking nut that is positioned at the inner ring left side of angular contact bearing is the axial locking nut.
The locking nut that is positioned at the inner ring right side of angular contact bearing is locking nut radially.
Compare with existing technology: the present invention connects UN type roller bearing through the end at main shaft, and because of there is rib both sides, NU type roller bearing outer ring, inner ring does not have rib, and this structure can allow the displacement on axial both direction between the relative bearing support; The other end at bearing is connected with the angular contact bearing that paired duplex is installed, and promptly wide end surface is to wide end surface, and narrow end surface arranges like this that to narrow end surface mounting structure can make axle or shell be limited in motion in the axial internal clearance scope; And screw rod is fixedly connected with axle, so just can guarantee the adjusting of screw rod; The present invention connects the locking nut that is used for fixing for making things convenient for the screw rod location and regulating respectively in the inner ring both sides of angular contact bearing.So just can remove trim tab, use double nut instead and regulate, no longer need the reconditioning trim tab during assembling, adjustment work becomes simple, has improved efficiency of assembling; After sale personnel outside the adjusting screw rod axial dimension also become easy.The angular contact bearing setting is the suction end of compressor host, can regulates through air compressor host suction port or side cover position easily like this.The locking nut that is positioned at the inner ring left side of angular contact bearing is the axial locking nut, and the locking nut on right side is locking nut radially, and this layout can further improve the convenience of operation, safeguarding and need not opening casing during adjusting, regulates more quick.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the partial enlarged drawing that is connected the angular contact bearing zone on the bearing;
Fig. 3 is the structural representation of axial locking nut;
Fig. 4 is the structural representation of locking nut radially.
Embodiment
Embodiment: as shown in Figure 1; Screw rod 2 is fixed on the main shaft 1, and spider piece 7 cooperatively interacts with screw rod 2, for main shaft 1 is installed; Be respectively equipped with the bearing support 8 of rigid bearing in the both sides of main shaft 1: main shaft 1 one ends support with NU type roller bearing 3 that can play; The angular contact bearing 4 that the other end is installed with paired duplex supports, and NU type roller bearing 3 ends are the end that moves about, and angular contact bearing 4 ends are fixed end.Angular contact bearing 4 adopts paired duplex that (configuration back-to-back) is installed, and the outer ring is fixing with back-up ring II 10 by back-up ring I 9, and inner ring is fixed by locking nut; The locking nut that is positioned at the inner ring left side of angular contact bearing 4 is an axial locking nut 5, and the locking nut that is positioned at the inner ring right side of angular contact bearing 4 is locking nut 6 radially.Like this when needing the axial position of adjustment screw rod 2 can through shifting axle to locking nut 5 and radially the axial position of locking nut 6 regulate, detailed structure is seen Fig. 2.
Single screw compressor is when design; Fixed end-angular contact bearing 4 is placed the suction end of compressor host, and Fig. 1 left end helps the radially adjusting of locking nut 6 like this; For the adjusting of axial locking nut 5, can regulate through air compressor host suction port or side cover position easily.
During assembling, at first compress, eliminate the gap with back-up ring I 9 and the outer ring of back-up ring II 10 with a pair of angular contact bearing 4, owing to adopt configuration face-to-face, also very close to each other between the inner ring.Screw rod 2 main shafts 1 parts of packing into then; The axial position of one side calibration screw 2; Regulate to locking nut 5 and locking nut 6 radially on one side through shifting axle, until screw rod 2 is adjusted to satisfied position, again with axial locking nut 5 and radially locking nut 6 lock.Axial locking nut 5 adopts high-precision YSA axial locking nut; As shown in Figure 3, locked position can be locked it in the rear end axially; Radially locking nut 6 adopts radially locking nut of high-precision YSR; As shown in Figure 4, can lock (suction port or side cover can be aimed at through rotary main shaft in the position of lock screw, convenient locking) to it through suction port or side cover.
The above; It only is a preferred embodiments of single screw compressor screw rod double nut mechanism for axial adjusting of the present invention; Be not that technical scope of the present invention is done any restriction; Any trickle modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above instance all should belong in the scope of present technique scheme.
Claims (4)
1. the screw axial regulating mechanism of a single screw compressor; It comprises the main shaft (1) of single screw compressor; On main shaft (1), be fixed with screw rod (2), be respectively equipped with bearing support in the both sides of main shaft (1), it is characterized in that: the end at main shaft (1) is connected with UN type roller bearing (3); The other end at bearing is connected with the angular contact bearing (4) that paired duplex is installed, and the inner ring of angular contact bearing (4) is fixed by locking nut.
2. the screw axial regulating mechanism of single screw compressor according to claim 1, it is characterized in that: angular contact bearing (4) is positioned at the suction end of compressor host.
3. the screw axial regulating mechanism of single screw compressor according to claim 1 is characterized in that: the locking nut that is positioned at the inner ring left side of angular contact bearing (4) is axial locking nut (5).
4. the screw axial regulating mechanism of single screw compressor according to claim 1 is characterized in that: the locking nut that is positioned at the inner ring right side of angular contact bearing (4) is locking nut (6) radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100238504A CN102678567A (en) | 2012-02-03 | 2012-02-03 | Screw axial adjustment mechanism for single-screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100238504A CN102678567A (en) | 2012-02-03 | 2012-02-03 | Screw axial adjustment mechanism for single-screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678567A true CN102678567A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100238504A Pending CN102678567A (en) | 2012-02-03 | 2012-02-03 | Screw axial adjustment mechanism for single-screw compressor |
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| CN (1) | CN102678567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604946A (en) * | 2016-03-09 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Single-screw compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5273413A (en) * | 1992-02-27 | 1993-12-28 | Skf Usa Inc. | Thrust bearing for high speed screw compressors |
| CN2777245Y (en) * | 2005-04-13 | 2006-05-03 | 朱孟君 | Small volume type air compressor |
| CN1982717A (en) * | 2005-12-16 | 2007-06-20 | 上海浪潮机器有限公司 | Convenient single-screw compressor |
| CN201133351Y (en) * | 2007-12-04 | 2008-10-15 | 上海施耐德日盛机械(集团)有限公司 | Single screw compressor main unit structure |
| CN202560566U (en) * | 2012-02-03 | 2012-11-28 | 贵州中电振华精密机械有限公司 | Screw axial adjustment mechanism of single screw compressor |
-
2012
- 2012-02-03 CN CN2012100238504A patent/CN102678567A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5273413A (en) * | 1992-02-27 | 1993-12-28 | Skf Usa Inc. | Thrust bearing for high speed screw compressors |
| CN2777245Y (en) * | 2005-04-13 | 2006-05-03 | 朱孟君 | Small volume type air compressor |
| CN1982717A (en) * | 2005-12-16 | 2007-06-20 | 上海浪潮机器有限公司 | Convenient single-screw compressor |
| CN201133351Y (en) * | 2007-12-04 | 2008-10-15 | 上海施耐德日盛机械(集团)有限公司 | Single screw compressor main unit structure |
| CN202560566U (en) * | 2012-02-03 | 2012-11-28 | 贵州中电振华精密机械有限公司 | Screw axial adjustment mechanism of single screw compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604946A (en) * | 2016-03-09 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Single-screw compressor |
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Application publication date: 20120919 |