CN201110312Y

CN201110312Y - Novel structural bidirectional cylindrical roller thrust bearing

Info

Publication number: CN201110312Y
Application number: CNU200720181808XU
Authority: CN
Inventors: 王丽君; 索战海; 崔建昌; 许云; 刘瑞实; 高国庆; 冯勇; 王琳
Original assignee: XIBEI BEARING CO Ltd
Current assignee: XIBEI BEARING CO Ltd
Priority date: 2007-10-11
Filing date: 2007-10-11
Publication date: 2008-09-03
Anticipated expiration: 2017-10-11

Abstract

The utility model relates to a bearing, in particular to a bidirectional cylinder roller bearing with novel structure, which comprises an upper and a lower shaft washers, a housing washer which is arranged between the two shaft washers, a roller which is arranged between the upper and the lower shaft washers and the housing washer and a retainer, wherein the bearing is characterized in that both of the top and bottom surfaces of the housing washer are provided with outer retaining side, the retainer is an open type retainer and the roller is a cylinder roller. The bidirectional cylinder roller bearing with novel structure is characterized in that firstly, since the retainer is changed to the open type retainer from the close type retainer, thereby, the problem of easy to store mud in gap between the retainer and the roller during the use of the bearing is efficiently solved, and the service life of the bearing is efficiently prolonged, secondly, since the ball-shaped roller is changed to the cylinder roller, thereby, compared with the original bidirectional thrust force angular contact ball bearing, the carrying power of a bidirectional thrust force combined bearing is improved almost to 80 percent.

Description

The two-way roller thrust bearing of new structure

Technical field

The utility model relates to the two-way roller thrust bearing of a kind of bearing, particularly a kind of new structure.

Background technique

At present bidirectional angular contact thrust ball bearing is all by two blowout patches up and down, forms at seat ring between two blowout patches and retainer and spherical roller up and down, and last blowout patche, angular contact thrust ball bearings are overlapped in blowout patche and seat ring formation two down.Because existing retainer is formed by radial retainer with by the annulus that pin is installed on radial retainer cylindrical, spherical roller is installed in the radial retainer, and the purpose of mounting circular ring is that roller is fixed in the retainer.

This class bearing is mainly used in the oil-well rig under well drilling, because the applied load of drilling equipment is big, service condition is abominable, the problem that present bidirectional angular contact thrust ball bearing mainly exists is: 1, the difficulty of processing of above-mentioned closed retainer is very big, yielding, and mud is easily deposited in the gap of retainer and roller, be unfavorable for the rolling of roller, influence the rotation and the working life of bearing; 2, since spherical roll in bearing capacity less relatively, the working life when working under above-mentioned operating conditions is shorter, will influence rig efficient and change bearing.

Summary of the invention

The purpose of this utility model be solve that existing bidirectional angular contact thrust ball bearing bearing capacity is lower, retainer production, matching requirements height, water is difficult for defective such as discharge mutually when using on drilling equipment with mud, provide that a kind of bearing capacity is higher, retainer is rational in infrastructure, help the two-way roller thrust bearing of the new structure that water and mud flow discharge.

The technical solution of the utility model is: a kind of two-way roller thrust bearing of new structure, comprise up and down two blowout patches, at a seat ring between two blowout patches up and down be installed in up and down roller and retainer between two blowout patches and the seat ring, it is characterized in that rib outside the top and bottom of above-mentioned seat ring all have, retainer is open retainer, and roller is a cylindrical roller.

Pocket hole on the above-mentioned open retainer is opened wide outside the circumference of retainer.

Characteristics of the present utility model are: 1, owing to become openly by closed retainer, can effectively solve the bearing gap of retainer and the roller problem of easily depositing mud in use, effectively prolong the working life of bearing; 2, owing to change spherical roller into cylindrical roller, the bidirectional propulsion combination bearing is compared with original bidirectional angular contact thrust ball bearing, bearing capacity improves nearly 80%.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the A-A sectional view of the new accompanying drawing 1 of this practicality.

Embodiment

As shown in Figure 1, 2, two-way roller thrust bearing is by last blowout patche 1, seat ring 3, be installed in retainer 2, cylindrical roller 5 and following blowout patche 4, seat ring 3 between blowout patche and the seat ring, be installed in down the two cover bearings up and down that retainer 2 between blowout patche and the seat ring, cylindrical roller 5 form and combine, retainer 2 is open retainer.In order to limit the radial-play amount of cylindrical roller 5, the outer rib 6 that on the periphery up and down of seat ring 3, all has projection, replace original annulus that is fixed on the retainer cylindrical, water in the time of so just can making work and mud are easy to discharge, guarantee the working environment of bearing, can effectively prolong the working life of bearing.Because this model utility is guaranteeing under the constant and immovable situation of overall volume of boundary dimension, when being used for oil-well drilling equipment, do not increasing under the volume and weight situation of main frame, can bear higher load, the 5000m of drilling depth when using bidirectional angular contact thrust ball bearing are brought up to 9000 meters, have possessed high reliability, long lifetime, using effect cheaply.

Claims

1, a kind of two-way roller thrust bearing of new structure, comprise up and down two blowout patches, at a seat ring between two blowout patches up and down be installed in up and down roller and retainer between two blowout patches and the seat ring, it is characterized in that rib outside the top and bottom of above-mentioned seat ring all have, retainer is open retainer, and roller is a cylindrical roller.

2,, it is characterized in that the pocket hole on the above-mentioned open retainer is opened wide outside the circumference of retainer according to the two-way roller thrust bearing of the described new structure of claim 1.