CN203051476U

CN203051476U - Roller bearing

Info

Publication number: CN203051476U
Application number: CN 201320069239
Authority: CN
Inventors: 李亮; 臧稳通; 焦育洁; 马美玲; 刘良勇
Original assignee: Luoyang Bearing Science and Technology Co Ltd
Current assignee: Luoyang Bearing Research Institute Co Ltd
Priority date: 2013-02-06
Filing date: 2013-02-06
Publication date: 2013-07-10
Anticipated expiration: 2023-02-06

Abstract

The utility model discloses a roller bearing. The roller bearing comprises an inner ring, an outer ring, and a roller pin arranged on a roller path between the inner ring and the outer ring, an oil injection hole radially penetrating through the inner and outer circumferences of the inner ring along a bearing is arranged on the part, corresponding to the roller path, of the inner ring, an oil storage groove is in the part, corresponding to the roller path, of the inner circumference of the outer ring, the notch of the oil storage groove is opposite to the oil injection hole on the inner ring on the radial direction of the bearing. The oil storage groove is arranged on the outer ring, good lubrication is provided for the outer ring, and the oil can be used as the reserve for the bearing lubrication when the oil injection hole of the inner ring or other oil hole is in lubrication fault. According to the above structure, the lubricating performance of the bearing is improved, the friction torque is reduced, and the comprehensive performance, service life and the reliability of the product are greatly improved.

Description

A kind of roller bearing

Technical field

The utility model relates to a kind of roller bearing.

Background technique

Existing roller bearing is lubricating when satisfying work, its structure such as the Chinese patent ZL 200820232226.4 disclosed annular grooves that in the middle part of the inner ring internal diameter, arrange, and at inner ring the uniform oilhole of radially opening is set, this structure is because only lubricated and easily cause lack of lubrication to needle roller from inner ring, friction torque when therefore bearing parts moves causes bearing life not reach requirement greatly, especially outer ring lubricated can not get good assurance, insufficient lubrication, especially in the lubrication system fault, oil-poor situation, all be difficult to guarantee the usability of bearing, long lifetime, high reliability request.

The model utility content

The purpose of this utility model is to provide a kind of lubricated sufficient roller bearing.

The technical solution of the utility model is: a kind of roller bearing, comprise inner ring, outer ring and be arranged at needle roller between the raceway on the inside and outside circle, it is characterized in that: the position of corresponding raceway offers the oil hole that radially connects the inner and outer circumferential surfaces of inner ring along bearing on the described inner ring, the position of corresponding raceway offers the store oil groove on the inner peripheral surface of outer ring, and the oil hole of offering on the notch of store oil groove and the inner ring upwards is oppositely arranged in the footpath of bearing.

Described oil hole has more than two and evenly distributes along the circumferential of inner ring in the middle part of inner ring, and described store oil groove is the annular groove around the circumferential distribution of outer ring.

The utility model is owing to be provided with the store oil groove in the outer ring, not only for the outer ring provides good lubricated, and when lubrication trouble appears in inner ring oil hole or other grease holes, can be used as the deposit of bearing lubrication.The setting of this structure not only improves the greasy property of bearing, has reduced friction torque, and The comprehensive performance, and life-span, reliability increase substantially.

Description of drawings

Fig. 1 is the utility model embodiment's structural representation.

Embodiment

As shown in Figure 1, a kind of embodiment of roller bearing of the present utility model comprises outer ring 01, inner ring 02 and is arranged at needle roller 04 between the raceway on the inside and outside circle that outer ring 01 external diameter is the ball crown type structure, and SR is the radius of arc of ball crown type structure.The position of the corresponding raceway in the middle part on 01 inner peripheral surface of outer ring offers the store oil groove 012 of 01 annular that circumferentially distributes around the outer ring; On the position of the corresponding raceway in inner ring 02 middle part 4 uniform oil holes 022 are set, oil hole 022 connects the inner and outer circumferential surfaces of inner ring 02, and the oil hole of offering on the notch of store oil groove 012 and the inner ring 022 upwards is oppositely arranged in the footpath of bearing.

In addition, in described, between the corresponding end at the axial two ends of outer ring loose rib 08 is installed, the installed position of the corresponding loose rib 08 in the end of described outer ring 01 is provided with in the outer ring indent step that 01 inner peripheral surface upper edge circumferentially distributes, the indent step has towards the ring surface of the also axial block cooperation of the end face of the loose rib 08 of correspondence and the facade of the 01 circumferential revolution distribution around the outer ring, offer the sealing gasket mounting groove 011 of annular on the described facade, be embedded with seal washer 68 in the described seal washer mounting groove 011, seal washer 68 is connected in outside the annular of radially turning up of overlapping shape body one end by cover shape body 680 and one and turns edge 681,682 formations turn edge in turning over radially, the external diameter of loose rib 08 is less than the internal diameter of the cover shape body 680 of seal washer 68, the outer circumferential face of loose rib 08 is squeezed on cover shape body 680 inner peripheral surfaces and is sealed and matched, the facade of the indent step on cover shape body 680 outer circumferential faces and the outer ring 01 compresses and is sealed and matched, turning edge outward 681 is inlaid in the seal washer mounting groove 011, in turn edge and 682 be attached on the ring surface of described indent step and be located between loose rib 08 and the described ring surface.The installed position of the corresponding loose rib 08 in the end of described inner ring 02 is provided with the ledge structure that circumferentially turns round the indent of distribution in the outer circumferential face upper edge of inner ring 02, this ledge structure has the annular table terrace 020 that cooperates with the end face axial block of corresponding loose rib 08 and around the circumferential conical surface 021 that distributes of revolution of inner ring 02, the small end of the described conical surface 021 bearing axially near step surface 020 and the big end of the conical surface 021 bearing axially on enlarged to the bearing outer end by bearing inside; Namely bearing axially on the conical surface 021 be that the big end of an end is little, the small end of the conical surface 021 than big end bearing axially on more close bearing inside, the big end of the conical surface 021 than small end bearing axially on the outer end of more close bearing.Be set with the jump ring that can radially actuate 89 between the inner peripheral surface that is located in the described conical surface 021 and corresponding loose rib 08 on the described conical surface 021, the taper wall that jump ring 89 inner peripheral surfaces are and the conical surface 021 coincide and cooperates, jump ring 89 is squeezed on the described conical surface 021 by the inner peripheral surface of loose rib 08 and makes jump ring 89 inner peripheral surface to loose rib 08 under the described conical surface 021 acts on apply radially outer elastic force.

Roller bearing outer ring 01 in the present embodiment, inner ring 02, needle roller 04 and loose rib 08 have adopted the bearing steel material manufacturing, and jump ring 89 has adopted the metallic copper material manufacturing, and the material of sealing gasket 68 is engineering plastics.And for corrosion-resistant, the surface of the outer circumferential face of outer ring 01, end, front and back has chromium coating, the outer surface of described loose rib 08 has chromium coating, and according to the actual definite thickness of coating value 0.045mm of engineering, the raceway face of described outer ring 01 and whole inner ring 02 surface are carried out oxidation processes and are had the oxidation processes layer; Because for chromium coating, the thickness of oxidation processes metal surface that layer increases is less, above-mentioned processing mode has guaranteed that namely the bearing whole outer surface has stronger corrosion resistance, the precision that has guaranteed inside and outside circle raceway and inner ring inner peripheral surface again can meet the demands, thus the life-span of under the situation of the reliability that does not influence bearing substantially, having improved bearing.

Claims

1. roller bearing, comprise inner ring, outer ring and be arranged at needle roller between the raceway on the inside and outside circle, it is characterized in that: the position of corresponding raceway offers the oil hole that radially connects the inner and outer circumferential surfaces of inner ring along bearing on the described inner ring, the position of corresponding raceway offers the store oil groove on the inner peripheral surface of outer ring, and the oil hole of offering on the notch of store oil groove and the inner ring upwards is oppositely arranged in the footpath of bearing.

2. roller bearing according to claim 1 is characterized in that: described oil hole have more than two and at the inner ring middle part along circumferentially evenly the distributing of inner ring, described store oil groove is the annular groove around the circumferential distribution of outer ring.