SU817245A1

SU817245A1 - Drilling rod

Info

Publication number: SU817245A1
Application number: SU782615752A
Authority: SU
Inventors: Александр Сафронович Курдюков; Герман Анатольевич Кузовников; Геннадий Федорович Точарин; Петр Яковлевич Чиглинцев; Илья Данилович Плеханов
Original assignee: Каштымский Машиностроительный Заводим.M.И.Калинина
Priority date: 1978-05-15
Filing date: 1978-05-15
Publication date: 1981-03-30

Description

1one

Изобретение относитс к горному делу, а именно, к буровому инструменту , предназначенному дл оснащени буровых станков при бурении скважин , используемому при добыче полезных ископ|аек&1х подземным и открытым способами и проведении других буровзрывных работ. QThe invention relates to mining, namely, a drilling tool intended to equip drilling rigs in the drilling of wells, used in the extraction of mineral resources & 1x underground and open pit and other drilling and blasting operations. Q

Известны буровые штанги дл бурени шпуров и скважин с высаженныхш хвостовиксъми. Хвостовики зтих штанг И1у1еют цилиндрическую или же коническую поверхности, предназначенные дл нарезани на них резьбы 1Drill rods are known for drilling holes and wells from upsetting tailings. The tails of these rods I110 are cylindrical or conical surfaces intended for threading 1 on them.

Недостатком известных штанг вл етс недостаточна надежность их работы и невысокий срок службы.A disadvantage of the known rods is the lack of reliability of their work and low service life.

Наиболее близкой по технической сущности вл етс бурова штанга, включающа присоединительные резьбы и элементы дли передачи крут щего момента 2 .The closest to the technical essence is a drill rod, which includes connecting threads and elements for the transmission of torque 2.

Однако эта штанга не обладает равнопрочностью , так как имеет различное поперечное сечение по длине. Поскольку по штанге передаетс ударна нагрузка от пневмоударника и она передает крут щий момент и осевое усилие, то в площади наименьшего поперечного сечени возникают максимальные напр жени , которые привод т к разрушению игцанги.However, this rod does not have equal strength, since it has a different cross section along the length. Since a shock load is transmitted from the hammer across the rod and it transmits torque and axial force, maximum stresses occur in the smallest cross-sectional area, which lead to the destruction of the uzhangi.

Цель изобретени - увеличение механической прбчности и надежности буровых штанг в прс цессе эксплуатации.The purpose of the invention is to increase the mechanical strength and reliability of the drill rods during operation.

Поставленна цель достигаетс тем, что средний диаметр присоеда нительиах резьб и рассто ние между рабочими поверхност ми элементов дл де0 редачи крут щего момента равны внутреннему диаметру штанги.This goal is achieved by the fact that the average diameter of the thread attachments and the distance between the working surfaces of the elements for transmitting a torque are equal to the internal diameter of the rod.

На фиг. 1 показана штанга, продольный разрез; на фиг. 2 - то же поперечное сечение.. .FIG. 1 shows a bar, a longitudinal section; in fig. 2 - the same cross section ...

5five

Бурова штанга состоит из высаженных участков с присоединительны резьбами 1 и 2, элементов 3 дл передачи крут щего момента, внутренней полости 4.The drill rod consists of upset sections with connecting threads 1 and 2, elements 3 for transmitting torque, and internal cavity 4.

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Claims

The elements 3 for transmitting the torque are made in the form of grooves which are located on the planted ends adjacent to the threaded arms. and serve to transmit torque when building up and parsing the drill rods in the drilling process. An energy carrier (compressed air) is fed through the internal cavity 4 to operate the hammer and blow downhole 0. The drill rod has an inner diameter of average diameter 1 ("the connecting pipe is: threads and the distance between the working noaepxHocTJiMH elements 3 for transmitting torque, made equal to each other. Due to this design, all sections of the drill rod experience the same stresses. This ensures equal strength of the drill rod , which discourages the increase of its service life.In addition, the position of the rods during assembly is smooth, since the elements for transmitting the torque are made in the form of grooves. Burov fines in the drilling process brighterly moving in the space between the walls of the i & i well and the outer surface of the rod is thrown out to the surface.It delays the harsh fines in the well and improves the drilling conditions Techno-economic efficiency of the invention and enhances the reliability of the Inventor Formula A drill rod, including connecting threads and elements for transmitting torque, in order to increase mechanical strength and reliability during operation, the average diameter connecting threads and the distance between the working surfaces of the elements for transmitting torque are equal to the inner diameter rod. Sources of information taken into account during the examination 1. Drilling tool handler. M., Nedra, 1976, p. 574.

2. USSR author's certificate number 185798, cl. E 21 B 17/00, 1966.