CN2575360Y

CN2575360Y - Controllable single-chip electromagnetic clutch

Info

Publication number: CN2575360Y
Application number: CN 02257976
Authority: CN
Inventors: 蔡旭东; 沈忠明
Original assignee: Changshu Great Wall Bearing Co Ltd
Current assignee: Changshu Great Wall Bearing Co Ltd
Priority date: 2002-10-22
Filing date: 2002-10-22
Publication date: 2003-09-24
Anticipated expiration: 2012-10-22

Abstract

The utility model relates to a single-row aligning roller bearing. The utility model is composed of an inner ring, an outer ring, a roller arranged between the inner and the outer rings, a couple of sealing rings and a couple of sealing ring grooves, wherein, the outer peripheral surface of the inner ring is provided with a groove, and a couple of flanges where both end surfaces of the roller are contacted with the groove are formed on both sides; a spherical rolling way for the roller to roll is formed at the bottom of the groove; a spherical rolling way for the roller to roll is formed on the inner peripheral surface of the outer ring; conical surfaces where a couple of sealing rings are contacted with the inner ring are respectively formed on both sides of the outer column surface of the inner ring. When the utility model is arranged on a broaching tool arm of a dobby machine, good contact and uniform stress of a cam bus bar of a cam of the dobby machine with the outer ring can be ensured without heat generation; in addition, the sealing rings can be well contacted with a conical surface, lubricating grease can not leak out, and the lubricating grease does not need to be frequency complemented.

Description

Single-row selfaligning roller bearing

The utility model relates to a kind of single-row selfaligning roller bearing, is the improvement to the roller bearing structure on the existing dobby head broaching tool arm that particularly is applied to weave.

Employed bearing is common roller bearing on the broaching tool arm of the dobby of existing textile manufacturing machine weaving machine, its structure such as Fig. 4, it is by inside and outside circle 1,2 and be located at the needle roller 3 of the band retainer 5 between the inside and outside circle 1,2 and add the back-up ring 4 that is located at both ends of the surface and form.The bearing of this kind structure since be with needle roller as rolling element, the cam bus that requires the shaft centre line that matches with it to contact with bearing outer ring therewith in theory should overlap with bearing axis, could embody the using effect of needle bearing like this.Yet, in the using process of reality, because there is certain inclination in the cam bus of the conjugate cam of dobby head, be difficult to fully contact with the bearing outer ring bus, in other words, can produce an angle between them unavoidably, cam contacts the end at bus with bearing like this, cause the stressed of bearing not to be in the middle of bearing, but unbalance loading is on bearing, stress occurs and concentrates, and causes bearing acutely to generate heat, then can burn bearing when serious, influence working life; In addition, the bearing of said structure is frequent make-up oil in use, thereby also shows its trouble in use.

Originally with novel purpose be to provide that a kind of cam bus that can ensure the dobby head conjugate cam fully contacts with bearing outer ring, avoid unbalance stress and generate heat so that scaling loss, in use need not the single-row selfaligning roller bearing of frequent supplemental lubrication fat.

The purpose of this utility model reaches like this, a kind of single-row selfaligning roller bearing, by inside and outside circle 1,2 be located at roller 3 between the inside and outside circle 1,2 and a pair of seal ring 4 and a pair of seal groove 8 are formed, the outer peripheral surface of described inner ring 1 is provided with groove 9, the rib 5 that the two ends end face of a pair of confession of the both sides formation roller 3 of this groove 9 is in contact with it, the bottom of groove 9 then forms the spherical raceway 6 that is used for for roller 3 rollings; Be formed with the spherical raceway 7 that rolls for roller 3 on the inner peripheral surface of described outer ring 2; The outer cylinder both sides lateral margin of described inner ring 1 is formed with the conical surface 10 that is in contact with it for a pair of seal ring 4 respectively.

The utility model is owing to done above-mentioned improvement, when it is installed on the broaching tool arm 12 of dobby head, the cam bus that can guarantee dobby head cam 13 well contacts with outer ring 2, stressed even and unlikely heating, and can well contact with the conical surface 10 because of sweet seal 4, lubricating grease can not ooze out, and does not need frequent supplemental lubrication fat.

Below in conjunction with accompanying drawing the utility model is further described below.

Fig. 1 is the utility model assembling assumption diagram.

Fig. 2 is that of the present utility model another implemented structural drawing.

Fig. 3 is installed in user mode figure on the dobby head broaching tool arm 12 for the utility model.

The roller bearing structural drawing of Fig. 4 for using on the broaching tool arm in the prior art.

The shape of roller 3 of the present utility model is dolioform.

As shown in Figure 1, because outer ring 2 is an annular, and its radial dimension is little than inner ring 1, is beneficial to the simplification overall structure like this.And spherical raceway 7 centers overlap with bearing centre, and outer ring 2 can freely be turned round around bearing centre, can demonstrate fully the aligning effect by this.A pair of seal groove 8 is opened in outer ring 2 inner peripheral surfaces near the end, and after a pair of seal ring 4 devices were in it, the interior edge of seal ring 4 can well contact with the described a pair of conical surface 10 on the inner ring 1 and be beneficial to sealing.

Again, as shown in Figure 1, but because aforementioned the utility model is an aligning, therefore, under the situation that seal ring 4 is not installed, inner ring 1 can reverse around any axis in the 2 both ends of the surface median planes of outer ring, thereby any two ends of inner ring 1 is deviate from outside.According to this reason, in the groove 9 of the inner ring 1 of earlier a part of roller 3 being packed into, promptly the working surface of each roller 3 is positioned on the spherical raceway 6, and the two ends end face of roller 3 contacts with rib 5, then outer ring 2 is enclosed within on the inner ring 1.Any axis of inner ring 1 in the 2 both ends of the surface median planes of outer ring reversed, in the installation process of whole roller 3, as long as, just all rollers 3 can be rolled into through the reversing of several times different azimuth.Last a pair of seal ring 4 is made it distortion by impressed pressure respectively place in a pair of seal groove 8 according to aforementioned.Because the restriction of seal ring 4, when the utility model descended aligning in working order, inside and outside circle 1,2 can not produce and excessively reverse and cause the phenomenon that roller 3 is deviate from.

The utility model is lifted the roller of stating 3 and is the solid matter state, but to be not unique row put form for this, for example: add holder 11 as shown in Figure 2, the arrangement that just can make roller 3 is by row between the solid matter change, therefore, even the utility model is become structure shown in Figure 2, not will be understood that it is the above-mentioned design proposal scope that has surmounted the inventor in the same old way.

Claims

1, a kind of single-row selfaligning roller bearing, by inside and outside circle (1), (2) be located at roller (3) between inside and outside circle (1), (2) and a pair of seal ring (4) and a pair of seal groove (8) are formed, the outer peripheral surface that it is characterized in that described inner ring (1) is provided with groove (9), the rib (5) that the two ends end face of the both sides formation a pair of confession rollers (3) of this groove (9) is in contact with it, the bottom of groove (9) then forms the spherical raceway (6) that is used for for roller (3) rolling; Be formed with the spherical raceway (7) that rolls for roller (3) on the inner peripheral surface of described outer ring (2); The outer cylinder both sides lateral margin of described inner ring (1) is formed with the conical surface (10) that is in contact with it for a pair of seal ring (4) respectively.

2, single-row selfaligning roller bearing according to claim 1 is characterized in that the shape of roller (3) is dolioform.