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Thrust bearing

A technology of thrust bearings and thrust ball bearings, which is applied in the field of thrust bearings, can solve problems such as uneven bearing capacity, impact on service life and applicability of thrust bearings, and large bearing structure size, so as to save space, increase bearing capacity, and reduce loads Effect

Active Publication Date: 2014-06-25
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: the conventional four-point angular contact ball bearings in which multiple rows of ball bearings are connected in series not only have uneven bearing capacity of each row, but also have structural dimensions of the bearings Larger, so the service life and suitability of the thrust bearing are affected

Method used

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Examples

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Embodiment 1

[0021] This embodiment provides a thrust bearing, please refer to figure 1 , figure 2 and image 3 , The thrust bearing includes: bearing left end ring 1, large thrust bearing 2, large conical sleeve 3, small conical sleeve 4, small thrust bearing 5 and bearing right end ring 6. The large conical sleeve 3 has an inner conical surface 31 and a large conical extending cylinder 32 , and the small conical sleeve 4 has an external conical surface 41 and a small conical extending cylinder 42 . Preferably, the inner conical surface 31 is an inner conical surface, and the outer conical surface 41 is an outer conical surface. As other embodiments, the inner tapered surface 31 and the outer tapered surface 41 may also be other shapes capable of changing the cross-sectional area.

[0022] The left end ring 1 of the bearing and the right end ring 6 of the bearing are respectively arranged at both ends of the thrust bearing, and the large conical sleeve 3 is arranged in cooperation wit...

Embodiment 2

[0029] This embodiment provides a thrust bearing, see Figure 4 , the thrust bearing is used in series with the plurality of thrust bearings described in the first embodiment to form a thrust bearing group together. In this way, the load transfer performance is better, and specific problems can be solved in many specific occasions.

[0030] The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

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Abstract

The invention discloses a thrust bearing, comprising a bearing left end ring (1), a big thrust bearing (2), a big cone sleeve (3), a small cone sleeve (4), a small thrust bearing (5) and a bearing right end ring (6), wherein the bearing left end ring (1) and the bearing right end ring (6) are respectively disposed at two ends of the thrust bearing; the big cone sleeve (3) and the small cone sleeve (4) are arranged in a matching manner; the big thrust bearing (2) sleeves one end of the small cone sleeve (4); and the small thrust bearing (5) is sleeved by one end of the big cone sleeve (3). By arranging the big thrust bearing, the big cone sleeve, the small cone sleeve and the small thrust bearing which are connected in parallel in the thrust bearing, the thrust bearing is compact in structure; the in-parallel arrangement realizes uniform distribution of load; the load of each bearing component can be effectively reduced; bearing capacity is increased; the service life is prolonged; and space is saved.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a thrust bearing. Background technique [0002] In the field of oil drilling, downhole power tools, drill bits, drill collars, etc. form a bottom hole assembly, which is located at the bottom of the entire drill string and directly provides rock breaking power for the drill bit, which can effectively improve the mechanical rate of penetration and achieve directional deflection. Function. Thrust bearing is one of the key components of downhole power drilling tools. It carries drill string load, hydraulic load and impact load during rock breaking. The service life and bearing capacity of the thrust bearing affect the performance of the entire downhole power tool. In order to improve the wellbore throughput and directional build-up rate during drilling operations, downhole power tools often have strict restrictions on the length of the tool. At present, the ordinary four-point angular cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/54F16C33/58
Inventor 陶诗凯李萌黄衍福刘凤段马利王瑞霄王宇鹏于兴胜何莎莎罗西超李如学聂海滨聂洁净
Owner BC P INC CHINA NAT PETROLEUM CORP