Thrust bearing

Abstract

The invention discloses an end thrust bearing for submersible motor in well, comprising a disk bearing support with a chucking lug and a concave spherical surface in the center of the bottom, a gap block consisting of a plurality of independent multipart bearing slide blocks, and a bearing disk fixed on the disk bearing support, wherein, the bearing disk is provided with a center hole, a limited post I with a groove I arranged on the inner circle edge, a limited post II with a groove II arranged on the outer circle edge, a positioning stud limiting the position of the multipart bearing slide block, and a spherical crown convex hall; the two surfaces of the multipart bearing slide block are smooth, and the big and small circular arc edges are provided with a flange. When the invention is installed, the big and the small circular arc edges are respectively embedded into the groove II and the groove I and then locked after being limited by the positioning stud, and each slide block is ina flexible and nondeciduous state. Therefore, the shape and the structure as well as the way of installation of the multipart bearing slide block are improved, the thickness of the multipart bearing slide block is greatly increased, the intensity and the surface finish quality are greatly improved, and the full contact of the multipart bearing with a trust disk is guaranteed. With good carrying capacity, abrasive resistance and simple structure, the friction plane is easy to be processed and the manufacturing accuracy is easy to be guaranteed.

Description

technical field [0001] The thrust bearing (B) of the present invention relates to a thrust bearing used in a submersible motor, especially a thrust bearing in a well-used submersible motor. Background technique [0002] The thrust bearing (B) currently used for submersible motors for wells mainly includes a disc bearing seat with positioning ears and a bearing bush arranged on the plane of the disc bearing seat. It is composed of multiple independent fan-shaped bearing sliders. The fan-shaped bearing sliders are evenly distributed on the disc bearing seat according to the circumference. There is a concave spherical surface in the center of the bottom surface of the disc bearing seat, and the concave spherical surface is supported by a spherical top column to adjust the bearing pressure. With the self-alignment of the fan-shaped bearing sliders, the above-mentioned fan-shaped bearing sliders have poor alignment ability and are easy to wear, and the connection between the fan-...

AI Technical Summary

Problems solved by technology

[0002] The thrust bearing (B) currently used for submersible motors for wells mainly includes a disc bearing seat with positioning ears and a bearing bush arranged on the plane of the disc bearing seat. It is composed of multiple independent fan-shaped bearing sliders. The fan-shaped bearing sliders are evenly distributed on the disc bearing seat according to the circumference. There is a concave spherical surface in the center of the bottom surface of the disc bearing seat, and the concave spherical surface is supported by a spherical top column to adjust the bearing pressure. With the self-alignment of the fan-shaped bearing sliders, the above-mentioned fan-shaped bearing sliders have poor alignment ability and are easy to wear, and the connection between the fan-shaped bearing sliders is weak and the pressure-bearing capacity is poor. The form of the bearing slider has good centering ability and is not easy to wear, but because this structure hides the fan-shaped bearing slider in the concave ring groove on the plane of the disc bearing seat, the back of the fan-shaped bearing slider is cast with a central support column and two Side positioning ribs, and there is a cavity between the central support column and the positioning ribs on both sides. After the fan-shaped bearing slider is hidden in the concave ring groove, it can swing sideways with the center support column as the center, and the height of the positioning ribs on both sides can determine the swing. The sector bearing slider of this structure has poor pressure bearing capacity due to its thinness, and the movement of the sector bearing slider in the concave ring groove is inflexible due to long-term corrosion or dirt accumulation, which is easy to cause wear and tear. At the same time, the structure The shape is also more complicated, the processing is difficult, and the manufacturing accuracy is difficult to guarantee

At the same time, all the above methods are easy to make the fan-shaped bearing slider fall off, and the installation is troublesome.

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