CN200996410Y

CN200996410Y - Supporting bearing

Info

Publication number: CN200996410Y
Application number: CN 200620165236
Authority: CN
Inventors: 蔡旭东; 沈忠明; 郭静瑜; 马万里; 邵彦
Original assignee: Changshu Great Wall Bearing Co Ltd
Current assignee: Changshu Great Wall Bearing Co Ltd
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2007-12-26
Anticipated expiration: 2016-12-21

Abstract

The utility model relates to a support bearing, including a bearing seat (1), an outer ring (7), an inner ring (8), a rolling needle (9), a steel ball (10), a steel ball retainer (11), a rolling needle retainer (12) and a retaining ring (13); the surface of the outer ring is provided with an arc-shaped raceway and a straight line raceway, and the surface of the inner ring is provided with a corresponding arc-shaped raceway and a straight line raceway; a group of steel ball (10) is arrayed between the arc-shaped raceway of the inner ring, and the steel balls are separated by the steel ball retainer (11) along the circle; a group of rolling needle (9) is arrayed between the straight line raceway of the inner and the outer ring, and the rolling needles are separated by the rolling needle retainer (12); two retaining rings (13) are provided at both sides of the straight line raceway which are used to limit the axial direction offset of the rolling needles and the rolling needle retainer.

Description

Block bearing

One, technical field

The utility model relates to a kind of block bearing, is mainly used in the supporting of the drawing-off in the spinning frame headstock or other occasion in the Weaving device.

Two, background technique

The purposes of bearing is widely, and its form also is diversified.As the bearing mounting structure on the existing Weaving device as shown in Figure 1, the configuration of bearing is made up of two cover deep groove ball bearings 2, separates with lining 3 at the inner ring place of bearing.Two cover bearings are installed in the bearing support 1, and carry out axially locating and carry axial force with back-up ring 4.Oilhole 5 is arranged on the bearing support, and repairing is by oilhole 5 lubricating grease to be squeezed in the space 6 during maintaining, enters in the bearing again.

Existing bearing is configured under the operating mode of general light load and can meets the demands, but along with the number of spindles of spinning frame strengthens, the machine lengthening, under the situation that the load of bearing obviously strengthens, the not competent work of bearing shows as the bearing beginning of fatigue failure.Its reason is:

1, bearing has born very large radial and axial combined loading at work, because textile industry, bearing is to work uninterruptedly, has caused the fatigue damage on bearing working surface and has caused bearing failure.

2, bearing is a grease lubrication, lubricating grease is to enter two cavitys 6 that overlap between the bearings by the oilhole on the bearing support 15, just can enter on the working surface of bearing then, like this for the working surface that makes bearing has enough lubricating grease, just must at first after filling up lubricating grease in the cavity 6, lubricating grease be entered in the bearing.Because in the bearing support 1 full lubricating grease is arranged, lubricating grease is driven stirring and can be produced very big heat at work, the effect that influence is lubricated, and be easy to produce lubricated stuffing situation not in place, make bearing failure.

3, owing to be the configuration of two cover bearings, therefore require the size of two cover bearings and the conformity of beating very high, and this is difficult to accomplish under actual conditions.Bearing inconsistent makes bearing carrying inequality at work, also is the reason of bearing premature failure.

Three, summary of the invention

1, goal of the invention: in order to overcome the problems referred to above of prior art, the utility model provides a kind of can bear very big radial and axial power, lubricated convenient and reliable, and the block bearing of high conformity.

2, technological scheme: block bearing described in the utility model, it comprises bearing support, outer ring, inner ring, needle roller, steel ball, ball retainer, cages for needle and back-up ring; The surface of outer ring is provided with a circular arc raceway and a lineal shape raceway, inner peripheral surface is provided with a corresponding with it circular arc raceway and a lineal shape raceway, one group of steel ball is arranged in the middle of the circular arc raceway of Internal and external cycle, and steel ball is separated at circumferencial direction by ball retainer; One group of needle roller is arranged in the middle of the lineal shape raceway of inner and outer ring, and needle roller is separated by cages for needle; Be provided with two back-up rings of the axial dipole field of restriction needle roller and cages for needle in the both sides of lineal shape raceway.

Seal ring is equipped with in the both sides in the space between inside and outside circle, has oil groove and be attached thereto logical oilhole in the middle of the outer round surface of outer ring.

The utility model is the combination bearing of an integral body.Two row's rolling elements are arranged, and a row is made up of steel ball, and it is evenly separated by the ball retainer circumferencial direction, and steel ball is along the circular arc raceway work of the inside and outside lasso of bearing, and the axial force that bearing bears is mainly born by this row's rolling element, and bears the part radial force; Another row's rolling element is made up of needle roller, and it is evenly separated at circumferencial direction by cages for needle, and needle roller is along the lineal shape raceway work of the inside and outside lasso of bearing, and the radial force that bearing bears is mainly born by this row's rolling element.

3, beneficial effect: the utility model is designed to a cover combination bearing to the installation configuration of existing two cover bearings, has avoided because the early failue in the bearing working that the difference between the different bearings causes; Adopt the design that ball bearing bears axial force and needle bearing comes bearing radial force, utilized their work characteristics to satisfy the usage requirement of bearing well; Because whole design bearing, electricity is improved the lubricated of bearing, the work raceway that lubricating grease can directly enter bearing by the oil groove and the oilhole of outer ring.

Four, description of drawings

Fig. 1 is the prior art constructions schematic representation;

Fig. 2 is a structural representation of the present utility model.

Five, embodiment

Block bearing as shown in Figure 2 comprises bearing support 1, outer ring 7, inner ring 8, needle roller 9, steel ball 10, ball retainer 11, cages for needle 12, back-up ring 13, seal ring 14, oil groove 5 and oilhole 15.

The internal surface of bearing outer ring 7 is provided with two work raceways, and one is the circular arc raceway, and another is the lineal shape raceway, and corresponding bearing inner race 8 outer surfaces also have two raceways, and one is the circular arc raceway, and another is the lineal shape raceway.Arrange one group of steel ball 10 in the middle of the circular arc raceway of inside and outside lasso, steel ball is evenly separated at circumferencial direction by ball retainer 11; Arrange one group of needle roller 9 in the middle of the lineal shape raceway of inside and outside lasso, needle roller is separated equably by cages for needle 12, is provided with two back-up rings 13 in the both sides of the lineal shape raceway of outer ring, in order to the axial dipole field of restriction needle roller and cages for needle.Near the endoporus both sides on plane seal groove is arranged at bearing outer ring, a slice seal ring 14 respectively is installed in seal groove, seal ring 14 plays the lubricating grease that prevents bearing inside and leaks and prevent the effect that outside dust or titbit enter bearing inside.Also be provided with oil groove 5 and oilhole 15 at bearing outer ring 7, can directly dose lubricating grease on the work raceway of bearing by oil groove 5 and oilhole 15.

Claims

1, a kind of block bearing is characterized in that it comprises bearing support (1), outer ring (7), inner ring (8), needle roller (9), steel ball (10), ball retainer (11), cages for needle (12) and back-up ring (13); The surface of outer ring is provided with a circular arc raceway and a lineal shape raceway, inner peripheral surface is provided with a corresponding with it circular arc raceway and a lineal shape raceway, one group of steel ball (10) is arranged in the middle of the circular arc raceway of Internal and external cycle, and steel ball is separated at circumferencial direction by ball retainer (11); One group of needle roller (9) is arranged in the middle of the lineal shape raceway of inner and outer ring, and needle roller is separated by cages for needle (12): two back-up rings (13) that are provided with the axial dipole field of restriction needle roller and cages for needle in the both sides of lineal shape raceway.

2, block bearing according to claim 1 is characterized in that seal ring (14) is equipped with in the both sides in the space between inside and outside circle, has oil groove (5) and is attached thereto logical oilhole (15) in the middle of the outer round surface of outer ring.