CN201963722U

CN201963722U - Roller bearing

Info

Publication number: CN201963722U
Application number: CN2010206276563U
Authority: CN
Inventors: 陈怀刚; 梁兴江; 赵圣卿; 陈原
Original assignee: Luoyang Bearing Science and Technology Co Ltd
Current assignee: Luoyang Bearing Research Institute Co Ltd
Priority date: 2010-11-27
Filing date: 2010-11-27
Publication date: 2011-09-07
Anticipated expiration: 2020-11-27

Abstract

The utility model provides a roller bearing which comprises an outer ring (1), an inner ring (2), a retaining frame (3) and rollers (4) and is characterized in that: an included angle formed between the surface of an outer roller way of the inner ring (2) and the axis of the inner ring which are converged together is equal to the included angle formed between the surface of an inner roller way of the outer ring (1) and the axis of the outer ring which are converged together; the surface of the outer roller way corresponds to the surface of the inner roller way; and a plurality of rollers (4) are arranged between the surface of the outer roller way and the surface of the inner roller way, and installed in pockets of the retaining frame (3) of a stripped structure. The outer roller way of the inner ring is divided into two half inner rings after being shaped; the retaining frame is divided into two half retaining frames in the axis direction; the bearing adopts a four-convex design, that is the surface of the outer roller way of the inner ring is a slightly convex surface; a convex retaining edge is arranged on a larger end face of the outer roller way of the inner ring; the surface of the inner roller way of the outer ring is a slightly convex surface; and the columnar surfaces of the outer diameters of the rollers are convex surfaces; therefore, the force receiving conditions of the bearing can be improved, the edge stress concentration of the rollers can be effectively reduced, and the service life of the bearing can be prolonged.

Description

A kind of roller bearing

Technical field

The utility model belongs to technical field of bearings, in particular for a kind of roller bearing of properller.

Background technique

Aircraft can be subjected to the influence of air-flow and wind direction variation in flight course, propeller cavitation will be obtained best operational effect according to these angles of facining the wind that change constantly the adjustment blade to obtain the thrust of maximum in the whole service process.

In addition, the radially installing space of propeller cavitation is very limited, and this has just proposed requirements at the higher level to the structural design of bearing.

Summary of the invention

For addressing the above problem, the utility model has designed a kind of roller bearing, and this roller bearing can satisfy the angle of facining the wind of properller blade, and has corrective action flexibly, installs and removes very convenient.

For achieving the above object, the utility model adopts following technological scheme:

A kind of roller bearing comprises outer ring, inner ring, retainer and roller, wherein to collect on the inner ring axis formed angle be to collect in the interior roller surface of outer ring that formed angle equates on the outer coil axis to the outer roller surface of inner ring, described outer roller surface is corresponding mutually with described interior roller surface, outside described roller surface and described in be fitted with several rollers between the roller surface, several rollers are installed in the pocket hole of retainer of banded structure.

Described roller bearing is split into two and half inner rings after the outer raceway typing of inner ring, and the subdivision line axially is 45 degree along inner ring, and the outer roller surface of inner ring is the dimpling face, and the large end face of the outer raceway of inner ring is provided with the convex rib.

Described roller bearing, roller surface is the dimpling face in the outer ring, and getting on the bus near the extension cylinder of raceway large end face in the outer ring is shaped on outside thread, and the blind hole of several even cloth is set near the outer ring radial end face of interior raceway.

Described roller bearing, the external diameter cylinder of roller is the dimpling face.

Described roller bearing, each inboard, pocket hole of retainer is provided with the lock pawl, and retainer is split into two and half retainers by axial direction, and described half retainer behind the subdivision is connected into integral cage by the connection snap close of its end face setting.

Owing to adopt technological scheme as mentioned above, the utility model produces following beneficial effect:

1, inner ring adopts split type structure, can install and remove bearing in limited installing space easily.

2, bearing adopts " four is protruding " design, be that large end face that the outer roller surface of inner ring is dimpling face, the outer raceway of inner ring is provided with the external diameter cylinder that roller surface in convex rib, the outer ring is dimpling face and roller and is the dimpling face, can improve the force-bearing situation of bearing like this, and the edge stress that effectively reduces roller is concentrated the working life of raising bearing.

3, the outside thread of car system can be gone into the bearing spinning in the seat hole of propeller blade implementation structure compactness and the purpose of being convenient to install on the extension cylinder of outer ring 1 interior raceway large end face by tightening nut.

4, retainer adopts the Belt lock buckle structure of nylon material, roller, retainer and inner ring can be connected as one to form an assembly, to adapt to the needs of installation.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among Fig. 1: the 1-outer ring; The 2-inner ring; The 3-retainer; The 4-roller.

Embodiment

In conjunction with Fig. 1, a kind of roller bearing of the utility model comprises outer ring 1, inner ring 2, retainer 3 and roller 4, wherein the outer roller surface of inner ring 2 collects on the inner ring axis formed angle and collects in the interior roller surface of outer ring 1 that formed angle equates on the outer coil axis, described angle generally is controlled between the 45-90 ˙, because also difference of angle is joined by the different institutes of the specification of propeller cavitation.Described outer roller surface with described in roller surface corresponding mutually, outside described roller surface and described in be fitted with several rollers 4 between the roller surface, several rollers 4 are installed in the pocket hole of retainer 3 of banded structure.

Be split into two and half inner rings after the inner ring 2 outer raceway typings, the subdivision line axially is 45 degree along inner ring 2, and inner ring 2 outer roller surfaces are the dimpling face, and the large end face of inner ring 2 outer raceways is provided with the convex rib.2 of inner rings are established the convex large-flange and are not established little rib, can make things convenient for the assembling of bearing like this.

Roller surface is the dimpling face in the outer ring 1, and getting on the bus near the extension cylinder of raceway large end face in the outer ring 1 is shaped on outside thread, and the blind hole of several even cloth is set near outer ring 1 radial end face of interior raceway.

The external diameter cylinder of roller 4 is the dimpling face, and the dimpling face can effectively reduce the stress at roller edge and concentrate.

Each inboard, pocket hole of retainer 3 is provided with the lock pawl, and retainer 3 is split into two and half retainers by axial direction, and described half retainer behind the subdivision is connected into integral cage by the connection snap close of its end face setting.

Bearing adopts " four is protruding " design, be that large end face that the outer roller surface of inner ring is dimpling face, the outer raceway of inner ring is provided with the external diameter cylinder that roller surface in convex rib, the outer ring is dimpling face and roller and is the dimpling face, can improve the force-bearing situation of bearing like this, and the edge stress that effectively reduces roller is concentrated the working life of raising bearing.Convexity to described dimpling face and described convex rib does not have specific (special) requirements, gets final product so long as not straightway, and the convexity of all described dimpling faces is consistent the coupling all.

Outer ring 1 is very different with the roller bearing of routine, and outer ring 1 radial end face of close interior raceway is a datum end face, and this datum end face operated by rotary motion has 4 uniform blind holes, so that the mounting or dismounting of bearing.Extension cylinder near raceway large end face in the outer ring 1 is non-datum end face, and the outside thread on it can be gone into the bearing spinning in the seat hole of propeller blade by tightening nut.

Retainer 3 adopts the banded structure design of nylon material, and the lock pawl has all been designed in the inboard in each pocket hole, can guarantee the reliable location of roller 4; The connection snap close of two ends design can consist of one with roller 4, retainer 3 and inner ring 2 behind retainer 3 subdivisions, in case the inner ring 2 of subdivision is separated.

During assembling, earlier roller 4 is packed in the banded retainer 3, the retainer that roller will be housed then encases two half inner rings in a circumferential direction, by snap close it is locked, form an inner ring 2, retainer 3 and roller 4 assemblies, get final product in outer ring 1 raceway of at last this assembly being packed into.

Claims

1. roller bearing, comprise outer ring (1), inner ring (2), retainer (3) and roller (4), it is characterized in that: the outer roller surface of inner ring (2) collects on the inner ring axis formed angle and collects in the interior roller surface of outer ring (1) that formed angle equates on the outer coil axis, described outer roller surface is corresponding mutually with described interior roller surface, outside described roller surface and described in be fitted with several rollers (4) between the roller surface, several rollers (4) are installed in the pocket hole of retainer (3) of banded structure.

2. roller bearing according to claim 1, it is characterized in that: be split into two and half inner rings after the outer raceway typing of inner ring (2), the subdivision line axially is 45 degree along inner ring, and the outer roller surface of inner ring (2) is the dimpling face, and the large end face of the outer raceway of inner ring (2) is provided with the convex rib.

3. roller bearing according to claim 1, it is characterized in that: the interior roller surface in outer ring (1) is the dimpling face, the extension cylinder of the interior raceway large end face in close outer ring (1) is got on the bus and is shaped on outside thread, and the blind hole of several even cloth is set near outer ring (1) radial end face of raceway in described.

4. roller bearing according to claim 1, it is characterized in that: the external diameter cylinder of roller (4) is the dimpling face.

5. roller bearing according to claim 1, it is characterized in that: each inboard, pocket hole of retainer (3) is provided with the lock pawl, retainer (3) is split into two and half retainers by axial direction, and described half retainer behind the subdivision is connected into integral cage (3) by the connection snap close of its end face setting.