CN208565255U

CN208565255U - A kind of needle roller thrust bearing of internal diameter bias

Info

Publication number: CN208565255U
Application number: CN201821100201.9U
Authority: CN
Inventors: 王亚楠; 张海
Original assignee: SUZHOU BEARING FACTORY CO Ltd
Current assignee: SUZHOU BEARING FACTORY CO Ltd
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2019-03-01
Anticipated expiration: 2028-07-12

Abstract

The utility model discloses a kind of needle roller thrust bearing of internal diameter bias, including seat ring, blowout patche between the seat ring and the blowout patche and is equipped with the retainers of several rolling elements；The seat ring and blowout patche pass through the seat ring stationary jaw on seat ring and the blowout patche stationary jaw on blowout patche and the mutual riveted of retainer；Radial internal clearance between the retainer and the seat ring is greater than the radial internal clearance between the retainer and the blowout patche.The radial internal clearance between retainer and seat ring can reduce the needle roller thrust bearing during operation, and it is designed to the needle roller thrust bearing of internal diameter bias, radial internal clearance between retainer and seat ring is greater than the radial internal clearance between retainer and blowout patche, so that needle roller thrust bearing guarantees there are enough radial internal clearances between retainer and seat ring during operation, prevent retainer from contacting friction during operation with seat ring, generation abrasion iron filings are avoided to enter Bearing inner, accelerate bearing wear, to improve bearing life.

Description

A kind of needle roller thrust bearing of internal diameter bias

Technical field

The utility model relates to a kind of needle roller thrust bearings, more particularly, to a kind of needle roller thrust bearing of internal diameter bias.

Background technique

Existing needle roller thrust bearing is made of 4 kinds of seat ring, blowout patche, retainer, rolling element parts, and rolling element is protected by thrust The holding and guidance of frame are held, selects high-accuracy rolling body to increase contact length, so that this bearing can obtain under the space of very little High loadability and high rigidity, if adjacent parts surface is suitable for that washer can be saved when making roller surface, can make it is compact to design, Needle roller thrust bearing uses the cylindrical surface of rolling element for correction of the flank shape face, can reduce edge stress, improve service life, and is integral type Standard bring convenience.

But existing needle roller thrust bearing design structure is single, radial internal clearance between retainer and seat ring and with blowout patche it Between radial internal clearance it is substantially suitable, do not fully take into account in needle roller thrust bearing operation process, retainer and bearing race it Between radial internal clearance reduce, be easily in contact friction, and then generate abrasion iron filings and enter Bearing inner, acceleration bearing wear, thus Lead to that bearing noise is big, initial failure, the feature that durability is poor, the service life is short.

Summary of the invention

The utility model aim is: providing one kind and is not only simple in structure, and the reasonable needle roller thrust axis of Radial windage It holds

The technical solution of the utility model is: a kind of needle roller thrust bearing of internal diameter bias, including seat ring, blowout patche are located at Between the seat ring and the blowout patche and the retainers of several rolling elements is installed；It is characterized in that, the seat ring and blowout patche Pass through seat ring stationary jaw and blowout patche stationary jaw and the mutual riveted of retainer；Radial direction between the retainer and the seat ring Clearance is greater than the radial internal clearance between the retainer and the blowout patche.

The seat ring stationary jaw and blowout patche stationary jaw are arranged in the seat ring at equal intervals as a preferred technical solution, On blowout patche outer diameter.

As a preferred technical solution, it is radial clearance fit between the retainer and the seat ring, guarantees retainer It is flexibly operated between rolling element and seat ring.

As a preferred technical solution, it is radial clearance fit between the retainer and the blowout patche, guarantees retainer It is flexibly operated between rolling element and blowout patche.

The utility model has the advantages that:

1. the utility model uses the design of internal diameter bias, increase the radial internal clearance between retainer and seat ring, breaks often The radial internal clearance held between frame and seat ring and blowout patche is suitable in rule design, make the radial internal clearance between retainer and seat ring be greater than with Radial internal clearance between blowout patche, so that needle roller thrust bearing be made to have enough radial directions between retainer and seat ring during operation Working gap.

2. the needle roller thrust bearing of the internal diameter bias of the utility model, prevents retainer and seat ring from transporting during operation Contact friction, causes bearing temperature sharply to increase during turning, and avoids generation abrasion iron filings from entering Bearing inner, accelerates Bearing Grinding Damage, to improve bearing life.

Detailed description of the invention

The utility model is further described with reference to the accompanying drawings and embodiments:

Fig. 1 is needle roller thrust bearing structural schematic diagram of the utility model with internal diameter bias；

Fig. 2 is the needle roller thrust bearing partial section enlarged view of the utility model internal diameter bias；

Wherein: 1 seat ring, 2 blowout patches, 3 rolling elements, 4 retainers, 5 seat ring fixing press claws, 6 blowout patche fixing press claws.

Specific embodiment

Embodiment: referring to Fig.1, shown in 2, a kind of needle roller thrust bearing of internal diameter bias, including seat ring 1, blowout patche 2 are located at Between the seat ring 1 and the blowout patche 2 and the retainers 4 of several rolling elements 3 is installed；It is characterized in that, 1 He of seat ring Blowout patche 2 passes through the blowout patche stationary jaw 6 and the mutual riveted of retainer 4 on the seat ring stationary jaw 5 and blowout patche 2 on seat ring 1；Institute State the radial internal clearance that the radial internal clearance between retainer 4 and the seat ring 1 is greater than between the retainer 4 and the blowout patche 2；It is interior Diameter is eccentric, guarantees there are enough Radial windages between retainer and seat ring in needle roller thrust bearing operation process；It protects simultaneously Equal radial clearance fit between frame 4 and seat ring 1 and blowout patche 2 is held, to guarantee that needle roller thrust bearing flexibly operates.

The structure snd size design of the utility model internal diameter bias is as follows:

According to the fit dimension and applicable cases of needle roller thrust bearing, theory analysis and using finite element analysis software, meter Calculate radial internal clearance variable quantity of the needle roller thrust bearing in a stationary situation and under working order, between retainer and seat ring.Table 1 is The endurance test temperature comparisons of the utility model and existing conventional techniques figure, table 2 are the utility model and existing conventional techniques Endurance test comparison diagram, as can be seen from the data in the table, adjusting the radial trip between retainer and seat ring by optimization design Gap guarantees that bearing has enough radial internal clearances under working order, between retainer and seat ring, prevents retainer and seat ring from transporting Contact friction increases bearing temperature sharply during turning, while generation abrasion iron filings being avoided to enter Bearing inner, accelerates bearing Abrasion, to improve bearing life.

The endurance test temperature comparisons of 1 the utility model of table and existing conventional techniques figure

The endurance test comparison diagram of 2 the utility model of table and existing conventional techniques

The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention. All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it It is interior.

Claims

1. a kind of needle roller thrust bearing of internal diameter bias, including seat ring (1), blowout patche (2) are located at the seat ring (1) and the axis Enclose between (2) and be equipped with the retainer (4) of several rolling elements (3)；It is characterized in that, the seat ring (1) and blowout patche (2) are logical Cross the blowout patche stationary jaw (6) and retainer (4) mutual riveted on seat ring stationary jaw (5) and blowout patche (2) on seat ring (1)； Radial internal clearance between the retainer (4) and the seat ring (1) is greater than between the retainer (4) and the blowout patche (2) Radial internal clearance.

2. the needle roller thrust bearing of internal diameter bias according to claim 1, which is characterized in that the seat ring stationary jaw (5) it is arranged on the seat ring (1) and blowout patche (2) at equal intervals with blowout patche stationary jaw (6).

3. the needle roller thrust bearing of internal diameter bias according to claim 1, which is characterized in that the retainer (4) and institute It states between seat ring (1) as radial clearance fit.

4. the needle roller thrust bearing of internal diameter bias according to claim 1, which is characterized in that the retainer (4) and institute It states between blowout patche (2) as radial clearance fit.