SU1687761A1

SU1687761A1 - Rolling cutter bit

Info

Publication number: SU1687761A1
Application number: SU884620612A
Authority: SU
Inventors: Александр Николаевич Попов
Original assignee: Всесоюзный Научно-Исследовательский Институт Буровой Техники
Priority date: 1988-12-15
Filing date: 1988-12-15
Publication date: 1991-10-30

Abstract

Изобретение относитс к буровой технике и м. б. использовано при бурении скважин различного назначени в разных горно-геологических услови х. Цель изобретени - повышение долговечности долота путем более лучшей герметизации подшипников и стойкости уплотнени . Долото содержит корпус 1 с цапфами 2 На цапфах 2 установлены шарошки 3 посредством подшипников 4 Между цапфой 2 и шарошкой 3 в проточке 5 со стороны корпуса 1 расположено уплотнение в виде шариков 6 из твердых материалов и густой смазки Шарики 6 м. б выполнены из материала, обладающего магнитными свойствами При работе долота благодар шарикам 6 густа смазка не вымываетс буровым раствором и надежно предотвращает проникновение шлама в полость подшипников 4 Долото м б. снабжено компенсатором в виде расположенного в выполненном в цапфе 2 радиальном глухом отверстии подпружиненного поршн В проточке 5мб. установлено ребристое кольцо в виде крестовины в поперечном сечении В ребрах кольца выполнены сквозные отверсти 2 з п ф-лы, 2 ил сThe invention relates to drilling equipment and m. B. Used in the drilling of wells for various purposes in different geological conditions. The purpose of the invention is to increase the durability of the bit by better sealing the bearings and sealing resistance. The chisel contains a housing 1 with trunnions 2. The trunnions 2 are mounted with roller cone 3 by bearings 4 Between trunnion 2 and roller cone 3 in a groove 5 on the side of body 1 there is a seal in the form of balls 6 of hard materials and grease Balls 6 m. B are made of material possessing magnetic properties During operation of the bit, thanks to balls 6 thick, the grease is not washed out by the drilling mud and reliably prevents the slime from penetrating into the bearing cavity 4 Bit m. equipped with a compensator in the form of a spring-loaded piston located in a radial blind hole made in trunnion 2 In a 5mb groove. a ribbed ring in the form of a cross in a cross section is installed. Through holes in the ribs of the ring there are 2 through-holes, 2 of them with

Description

Фиг. 2FIG. 2

Claims

Claim

1. A cone bit containing a body with pins mounted on the cone pins by bearings and a seal located in the cone groove from the side of the casing, characterized in that, 25, in order to increase the durability of the bit by better sealing the bearings, the seal is made in the form of balls from solid materials and grease.

2. The bit according to π. 1, characterized in that the balls are made of a material having magnetic properties.

3. The bit according to paragraphs. 1 and 2, characterized in that, in order to increase the durability of the seal, it is equipped with a compensator in the form of a spring-loaded piston located in a radial blind bore made in the trunnion, in communication with the groove, and a ribbed ring in the form of a cross in the cross section installed in the trunnion groove moreover, through holes are made in the ribs.

FIG. 2