SU641062A1 - Rock roller bit support - Google Patents

Rock roller bit support

Info

Publication number
SU641062A1
SU641062A1 SU772506999A SU2506999A SU641062A1 SU 641062 A1 SU641062 A1 SU 641062A1 SU 772506999 A SU772506999 A SU 772506999A SU 2506999 A SU2506999 A SU 2506999A SU 641062 A1 SU641062 A1 SU 641062A1
Authority
SU
USSR - Soviet Union
Prior art keywords
roller bit
sleeve
bit support
rock roller
roller
Prior art date
Application number
SU772506999A
Other languages
Russian (ru)
Inventor
Павел Михайлович Цехмистренко
Original Assignee
Московский Ордена Трудового Красного Знамени Институт Нефтехимической И Газовой Промышленности Имени И.М.Губкина
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Московский Ордена Трудового Красного Знамени Институт Нефтехимической И Газовой Промышленности Имени И.М.Губкина filed Critical Московский Ордена Трудового Красного Знамени Институт Нефтехимической И Газовой Промышленности Имени И.М.Губкина
Priority to SU772506999A priority Critical patent/SU641062A1/en
Application granted granted Critical
Publication of SU641062A1 publication Critical patent/SU641062A1/en

Links

Landscapes

  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

Изобретение относитс  к пороцоразрущающему инструменту, а именно к опорам буровых шарошечных долот. Известна опора шарошечного долота, включающа  подшипник скольжени , содер жащий втулку, запрессованную в шарош ку l. Недостатком этой опор  вл етс  интенсивный износ цапфы с нагруженной стороны. Наиболее близким к изобретению техническим решением  вл етс  опора шарошечного долота, содержаша  подшипник скольжени , включаюший плаваюшую втулку , установленную между цапфой лапы и шарошкой 2. Однако указанна  опора имеет небольшой срок службы иэ-за радиального изно са цапфы со стороны нагружени  или неравномерного износа втулки в результате ее заклинивани . Цель изобретени  - увеличение срока службы опоры путем обеспечени  равномерного износа втулки и уменьшени  радиального износа цапфы. Указанна  цепь достигаетс  тем, что втулка выполнена трехслойной из материалов с различными сопротивлени ми трению скольжени , удовлетвор юшими уеловию: f,,d f.D, где i -( - коэффициент трени  поверхности скольжени  шарошки по наружному слою втулки; f - - коэффициент трени  внутренней поверхности втулки по поверхности цапфы; f - коэффициент трени  поверхности скольжени  шарошки по промежуточному слою втулки; D - диаметр поверхности скольжени  арошки NTM;i диаметр цапфы, мм. На фиг. 1 изображена опора шароше ьного долота, продольный разрез; на фиг.2сечение А-А фиг. 1. Опора включает цапфу 1, шарошку 2 к трехслойную втулку 3, содержащую внутThe invention relates to a porous destructive tool, namely, supports for roller cone bits. A roller bit bearing is known, which includes a sliding bearing containing a sleeve, which is pressed into the roller cutter l. The disadvantage of this support is intensive wear of the trunnion on the loaded side. The closest technical solution to the invention is a roller bit bearing containing a sliding bearing including a floating sleeve installed between the pin of the foot and the roller cutter 2. However, this support has a short service life due to the radial wear of the axle from the loading side or uneven wear of the sleeve as a result of its jamming. The purpose of the invention is to increase the service life of the bearing by ensuring uniform wear of the sleeve and reducing the radial wear of the axle. This chain is achieved by the fact that the sleeve is made of three layers of materials with different resistance to sliding friction, satisfying the conditions: f ,, d fD, where i - (is the coefficient of friction of the sliding surface of the roller cone on the outer layer of the sleeve; f - is the coefficient of internal surface friction sleeves over the pin surface; f is the coefficient of friction of the sliding surface of the roller cutter over the intermediate layer of the sleeve; D is the diameter of the sliding surface of the slide NTM; i is the diameter of the pin, mm Fig. 1 shows the bearing of the sharoshe bit, longitudinal section; 2section A-A of Fig. 1. The support includes trunnion 1, the roller cutter 2 to the three-layer sleeve 3, containing

SU772506999A 1977-07-11 1977-07-11 Rock roller bit support SU641062A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772506999A SU641062A1 (en) 1977-07-11 1977-07-11 Rock roller bit support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772506999A SU641062A1 (en) 1977-07-11 1977-07-11 Rock roller bit support

Publications (1)

Publication Number Publication Date
SU641062A1 true SU641062A1 (en) 1979-01-05

Family

ID=20717791

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772506999A SU641062A1 (en) 1977-07-11 1977-07-11 Rock roller bit support

Country Status (1)

Country Link
SU (1) SU641062A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6033117A (en) * 1995-12-19 2000-03-07 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration
US6254275B1 (en) 1995-12-19 2001-07-03 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability
US6264367B1 (en) 1995-12-19 2001-07-24 Smith International, Inc. Dual-seal drill bit with fluid cleaning capability
US7992657B2 (en) 2006-08-18 2011-08-09 Atlas Copco Secoroc Llc Earth bit having a wear ring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6033117A (en) * 1995-12-19 2000-03-07 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration
US6254275B1 (en) 1995-12-19 2001-07-03 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability
US6264367B1 (en) 1995-12-19 2001-07-24 Smith International, Inc. Dual-seal drill bit with fluid cleaning capability
US7992657B2 (en) 2006-08-18 2011-08-09 Atlas Copco Secoroc Llc Earth bit having a wear ring

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