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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 reducing the space of the roller cone bearing, limiting the potential of the roller cone bearing, and occupying the space of the cone shell, etc.

Inactive Publication Date: 2013-09-11
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

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Embodiment Construction

[0020] like figure 1 Shown is a partial cross-sectional schematic diagram of the roller cone bit adopting the rolling cone bearing of 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 thrust surface of the lock nut , 6 is the thrust surface in the cone shell, 7 is the tightening mouth, 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 The previous application number is: 201210519957.8 patent and other conventional gears are similar, such as the sealing plugs, oil storage chambers and oil passages of the claw shaft axis through holes, 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 constrain...

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Abstract

The invention discloses a roller bit and a manufacturing method thereof. A bearing system of the roller bit is a rolling cone bearing or a cone arc sliding block, the thrust surface of a locking nut abuts against a rolling cone or the small-head end face of the sliding block, the rolling cone or the big-head end face of the sliding block abuts against an inner thrust surface of a cone shell, and therefore a conical rolling or sliding bearing system is tightly arranged, and meanwhile a reliable cone shell locking function is achieved. A cone shell locking device is assembled through the method that a screwdriver or an inside hexagon spanner penetrates through a bit jaw shaft central hole to screw a bit jaw shaft tightly inside a nut instead of the method of screwing the bit jaw shaft outside the nut. According to the characteristic that the conical bit jaw shaft structure is simple, an efficient boring technology is used for machining.

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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IPC IPC(8): E21B10/22B23P15/28
Inventor 李荟敏
Owner 李荟敏
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