Roller bit and manufacturing method thereof

A roller cone bit and roller cone technology, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of occupying the space of the cone shell, insufficient reliability, and limiting the potential of the rolling cone bearing, etc.

Inactive Publication Date: 2014-03-12
李荟敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It adopts a tapered roller bearing close to the present invention, but the locking mechanism is complicated, the reliability is not high enough, and it takes up more valuable space in the cone shell, which reduces the space reserved by the tapered roller bearing and limits the play of the tapered roller bearing. potential

Method used

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  • Roller bit and manufacturing method thereof
  • Roller bit and manufacturing method thereof
  • Roller bit and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 1 Shown is the partial sectional view of the cone bit of the roller cone bearing that adopts the lock nut to lock in the present invention, wherein 1 is the claw, 2 is the claw shaft, 3 is the cone shell, 4 is the lock nut, and 5 is the The thrust surface of the lock nut, 6 is the thrust surface inside the cone housing, 7 is the nut tightening opening, 8 is the through hole of the claw shaft axis, 9 is the pincer-shaped anti-rotation collar, 10 is the rolling cone, and the rest, Especially with the inventor's previous application number is: 201210519957.8 patents and other conventional gears are similar, as the sealing plug, oil storage chamber and oil passage of the claw shaft axis through hole, etc. are not drawn in detail, and will not be described in detail. Wherein the outer tapered surface of claw shaft 2 is the tapered bearing runway, cooperates with the gear housing 3 and the rolling cone 10, and becomes a complete tapered bearing system under the...

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Abstract

The invention discloses a roller bit and a manufacturing method thereof. A rolling cone bearing or a conical arc-shaped slide block flap is taken as a bearing system; a conical rolling or sliding bearing system is arranged tightly in a way that the thrust surface of a locking nut is adjacent to the small-end end face of a rolling cone or the slide block flap, and the large-end end face of the rolling cone or the slide block flap is adjacent to the inner thrust surface of a cone shell; meanwhile, a reliable locking function of the cone shell is realized. An efficient boring process is adopted for processing by means of the characteristic of simple structure of a conical claw shaft. The service life of the bearing system of the roller bit is prolonged, and the manufacturing efficiency is increased.

Description

technical field [0001] The invention relates to a roller cone bit, which is suitable for manufacturing roller cone bits for mining, oil and gas drilling and exploitation, geological drilling, civil construction drilling, drilling pile foundation holes, etc., including three-cone bits and single-cone bits , four-cone drill bits, combined roller cone bits, and roller cone reamers, etc., are rock-breaking products that include extended variants of cone shells. Background technique [0002] The traditional roller cone bit, especially the bearing system, has two types: rolling bearing and sliding bearing. Sliding bearings have strong load-carrying capacity but are not suitable for high-speed operation, while rolling bearings are suitable for high-speed operation but have weak load-carrying capacity. The common problem they face is that the service life is not long enough, and the early failure of the bearing system accounts for about 80% of all failure rates. In order to meet th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/22B23P15/28
Inventor 李荟敏
Owner 李荟敏
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