CN1831348A - Combined bearing for offset press - Google Patents
Combined bearing for offset press Download PDFInfo
- Publication number
- CN1831348A CN1831348A CN 200610043630 CN200610043630A CN1831348A CN 1831348 A CN1831348 A CN 1831348A CN 200610043630 CN200610043630 CN 200610043630 CN 200610043630 A CN200610043630 A CN 200610043630A CN 1831348 A CN1831348 A CN 1831348A
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- roller bearing
- tapered roller
- bearing
- biserial
- inner ring
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Abstract
The invention discloses a combination bearing for an offset press, comprising a double-outer ring double-column center cone roller bearing, where there is a double-inner ring double-column center cone roller bearing arranged in a space inside inner ring of the former roller bearing, rotation centers of the two roller bearings are displaced, and the preloads applied onto the two roller bearings to eliminate radial windage of bearings are opposite and offset each other and therefore can not be transferred to wall panels so as to be able to realize high-rigidity, high-speed and high-accuracy rotation and improve printing quality, and it can realize clutch operation and pressurization between rollers by rotation of the inner ring of the double-outer ring double-column center cone roller bearing, simple in structure and reliable to operate and able to be continuously adjusted.
Description
Technical field
The present invention relates to a kind of bearing, relate in particular to the bearing that a kind of offset press is used.
Background technique
The cylinder group of offset press is installed on the offset press wallboard by bearing, bearing housing.Gap in the idler is to make cylinder when rotated, and its rotating center is uncertain in the spatial position, and produce one of reason of rocking.Consequently make on the printedmatter to produce black thick stick, ghost image, phenomenon such as unintelligible, had a strong impact on the quality of printedmatter.Gap in the idler comprises the play in the bearing and the gap in bearing housing and wallboard hole.At the play in the bearing, can be by selecting suitable bearing, as radially thrust ball bearing, tapered roller bearing etc., and apply axial preload to eliminate the radial internal clearance of bearing; But owing to common radially thrust ball bearing, the preload of tapered roller bearing can pass to the offset press wallboard, and can cause the distortion of wallboard, can influence the decline of printing quality equally.And the employing plain bearing can not be realized clutch and pressurization between the cylinder, causes the complicated of offset press structure for realizing clutch and pressurization between the cylinder.
Summary of the invention
Technical problem to be solved by this invention provides a kind of clutch between the cylinder and pressurization, bearing realized and transfers the crack preload can not pass to the combined bearing for offset press of wallboard.
For achieving the above object, technological scheme of the present invention is: combined bearing for offset press, comprise two outer rings biserial annular tapered roller bearing, be provided with a pair of inner ring biserial annular tapered roller bearing in the inner space of the inner ring of described pair of outer ring biserial annular tapered roller bearing, the inner ring of the outer ring of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing is an integral structure, and the rotating center of described pair of inner ring biserial annular tapered roller bearing is eccentric in the rotating center of described pair of outer ring biserial annular tapered roller bearing.
As a kind of improvement, described off-centre is between the inner ring periphery of the outer ring inner headed face of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing.
Owing to adopt technique scheme, combined bearing for offset press, comprise two outer rings biserial annular tapered roller bearing, be provided with a pair of inner ring biserial annular tapered roller bearing in the inner space of the inner ring of described pair of outer ring biserial annular tapered roller bearing, the inner ring of the outer ring of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing is an integral structure, and the rotating center of described pair of inner ring biserial annular tapered roller bearing is eccentric in the rotating center of described pair of outer ring biserial annular tapered roller bearing; The described pair of inner ring biserial annular tapered roller bearing and the described pair of outer ring biserial annular tapered roller bearing apply axial preload when eliminating the radial internal clearance of bearing, its preload in opposite directions and cancel out each other, therefore preload can not pass to wallboard, can realize the high rigidity of cylinder, high rotating speed, high-precision rotary, improve the printing quality of printing press, reach the purpose of solid clear, the good colour inkless thick stick in the full version of printedmatter site; Because eccentric setting by rotating the inner ring of two outer rings biserial annular tapered roller bearing, can realize clutch and pressurization between the cylinder, and is simple in structure, reliable operation, and can adjust continuously.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the left view of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, combined bearing for offset press, comprise two outer rings biserial annular tapered roller bearing, be provided with a pair of inner ring biserial annular tapered roller bearing in the inner space of the inner ring of described pair of outer ring biserial annular tapered roller bearing, the inner ring of the outer ring of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing is an integral structure, and the rotating center of described pair of inner ring biserial annular tapered roller bearing is eccentric in the rotating center of described pair of outer ring biserial annular tapered roller bearing.
Described off-centre is between the inner ring periphery of the outer ring inner headed face of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing.
Technology contents about two outer rings biserial annular tapered roller bearing and two inner ring biserial annular tapered roller bearings, the 7-189 page or leaf that " mechanical design handbook " (the 4th edition) second of publishing in January, 2002 in Chemical Industry Press rolled up has detailed diagram, its technology is that the common engineers and technicians in present technique field are known, does not repeat them here.
In the present embodiment, the inner ring of the outer ring of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing is an integral structure, and for convenience of description, as shown in Figure 1, we are referred to as centre circle 2.
Specifically, the present invention includes centre circle 2, the outer surface of centre circle 2 has the raceway of two groups of tapered rollers 4 of race bearing, corresponding is the outer ring 1 of two tapered roller bearings therewith, be provided with retainer 41 between the some tapered rollers 4 of described every circle, be provided with race bearing spacer ring 6 between the outer ring 1 of two tapered roller bearings, race bearing spacer ring 6 is provided with lubrication oil hole 61, the width of race bearing spacer ring 6 has determined the gap of race bearing, match grinding processing as required when mounted is to satisfy the print request of offset press.
The internal surface of centre circle 2 has the raceway of two groups of tapered rollers 5 of inner-ring bearing, corresponding is the inner ring 3 of two tapered roller bearings therewith, be provided with retainer 51 between the some tapered rollers 5 of described every circle, be provided with inner-ring bearing spacer ring 7 between the inner ring 3 of two tapered roller bearings, also be provided with lubrication oil hole 71 on the inner-ring bearing spacer ring 7, the width of same inner-ring bearing spacer ring 7 has determined the gap of inner-ring bearing, also needs match grinding processing when mounted.
Another outstanding characteristics of the present invention are: the raceway decentraction of the outer surface of the raceway of the internal surface of centre circle 2 and centre circle 2, have certain eccentric amount e between the two, and in the present embodiment, its eccentric amount e is 2-6mm; And the sidewall of centre circle 2 is provided with the oilhole 21 that leads to inner-ring bearing.。
Can realize the clutch and the pressurization of cylinder by rotating centre circle: the connecting rod (not shown) of rotational fixation on centre circle, its rotation drives bearing centre circle 2 by bolt and turns an angle.Because bearing internal layer raceway is eccentric with respect to outer raceway, thereby the inboard raceways center is that centre of the drum's line is also eccentric thereupon, mobile, so just change the centre distance between the cylinder, realized pressurization or release and clutch that the impression with the cylinder cooperating is rolled.
The present invention can realize that centre of the drum apart from adjusting and axially adjusting, has reduced the stress deformation of bearing and wallboard, printing quality and the working life that can improve offset press greatly significantly.
Claims (2)
1. combined bearing for offset press, comprise two outer rings biserial annular tapered roller bearing, it is characterized in that: be provided with a pair of inner ring biserial annular tapered roller bearing in the inner space of the inner ring of described pair of outer ring biserial annular tapered roller bearing, the inner ring of the outer ring of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing is an integral structure, and the rotating center of described pair of inner ring biserial annular tapered roller bearing is eccentric in the rotating center of described pair of outer ring biserial annular tapered roller bearing.
2. combined bearing for offset press as claimed in claim 1 is characterized in that: described off-centre is between the inner ring periphery of the outer ring inner headed face of described pair of inner ring biserial annular tapered roller bearing and described pair of outer ring biserial annular tapered roller bearing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200610043630 CN1831348A (en) | 2006-04-21 | 2006-04-21 | Combined bearing for offset press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200610043630 CN1831348A (en) | 2006-04-21 | 2006-04-21 | Combined bearing for offset press |
Publications (1)
Publication Number | Publication Date |
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CN1831348A true CN1831348A (en) | 2006-09-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 200610043630 Pending CN1831348A (en) | 2006-04-21 | 2006-04-21 | Combined bearing for offset press |
Country Status (1)
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CN (1) | CN1831348A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102092176A (en) * | 2010-12-20 | 2011-06-15 | 湖南汉升机器制造有限公司 | Device for axially positioning eccentric bearing of printing cylinder in printing unit |
CN102185412A (en) * | 2011-05-23 | 2011-09-14 | 南车株洲电机有限公司 | High-power traction motor bearing installation and lubrication method and device |
CN103047277A (en) * | 2013-01-06 | 2013-04-17 | 洛阳轴研科技股份有限公司 | Double-row and double-column hollow cylindrical roller bearing comprising eccentric center ring |
CN106523533A (en) * | 2016-12-19 | 2017-03-22 | 中北大学 | Double-bearing nested structure suitable for passive semi-strapdown inertia measurement system |
-
2006
- 2006-04-21 CN CN 200610043630 patent/CN1831348A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102092176A (en) * | 2010-12-20 | 2011-06-15 | 湖南汉升机器制造有限公司 | Device for axially positioning eccentric bearing of printing cylinder in printing unit |
CN102185412A (en) * | 2011-05-23 | 2011-09-14 | 南车株洲电机有限公司 | High-power traction motor bearing installation and lubrication method and device |
CN102185412B (en) * | 2011-05-23 | 2013-06-05 | 南车株洲电机有限公司 | High-power traction motor bearing installation and lubrication method and device |
CN103047277A (en) * | 2013-01-06 | 2013-04-17 | 洛阳轴研科技股份有限公司 | Double-row and double-column hollow cylindrical roller bearing comprising eccentric center ring |
CN103047277B (en) * | 2013-01-06 | 2015-04-29 | 洛阳轴研科技股份有限公司 | Double-row and double-column hollow cylindrical roller bearing comprising eccentric center ring |
CN106523533A (en) * | 2016-12-19 | 2017-03-22 | 中北大学 | Double-bearing nested structure suitable for passive semi-strapdown inertia measurement system |
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