SU729341A1

SU729341A1 - Apparatus for rotary drilling of blast holes

Info

Publication number: SU729341A1
Application number: SU742083961A
Authority: SU
Inventors: Александр Иванович Шубный
Original assignee: За витель
Priority date: 1974-12-14
Filing date: 1974-12-14
Publication date: 1980-04-25

Description

Изобретение относится к горному делу, а именно к устройствам для вращательного бурения шпуров.The invention relates to mining, and in particular to devices for rotary drilling of holes.

Известна коронка для вращательного колонкового бурения, состоящая из двух короночных колец с резцами одного диаметра, ⁵попеременно вводимых в работу за счет срезания крепежных штифтов [1].Known crown for rotary core drilling, consisting of two core rings with cutters of the same diameter, ^{5 are} alternately put into operation by cutting the mounting pins [1].

Наиболее близким по технической сущности к изобретению является устройство для вращательного бурения скважин, вклю- jq чающее буровое сверло со шпинделем, промывочную муфту, наружную й внутреннюю концентрично расположенные штанги с буровыми резцами и хвостовиками [2].The closest in technical essence to the invention is a device for rotary drilling of wells, including jq drill with a spindle, flushing sleeve, outer and inner concentric rods with drill bits and shanks [2].

Цель изобретения — обеспечение попеременной работы резцов одного диаметра. 15The purpose of the invention is the provision of alternate operation of incisors of the same diameter. fifteen

Это достигается тем, что предлагаемое устройство снабжено переключателем, выполненным из резьбовой муфты, один конец которой укреплен посредством резьбового соединения на шпинделе сверла, а на другом конце укреплен хвостовик наружной штанги, при этом внутренняя штанга неподвижно закреплена своим хвостовиком в шпинделе сверла.This is achieved by the fact that the proposed device is equipped with a switch made of a threaded sleeve, one end of which is fixed by means of a threaded connection on the drill spindle, and the shank of the outer rod is strengthened on the other end, while the inner rod is fixedly mounted with its shank in the drill spindle.

На фиг. 1 изображено устройство, общий вид; на фиг. 2 — резец внутренней штанги, вид спереди; на фиг. 3 — то же, вид сбоку; на фиг. 4 — резец наружной штанги, вид спереди; на фиг. 5 — то же, вид сбоку; на фиг. 6 — переключатель устройства, вид сбоку.In FIG. 1 shows a device, a General view; in FIG. 2 - cutter of the inner rod, front view; in FIG. 3 - the same side view; in FIG. 4 - front rod cutter, front view; in FIG. 5 is the same side view; in FIG. 6 - device switch, side view.

Внутри полой штанги 1 проходит штанга 2. К наружной и внутренней штангам прикреплены резцы 3 и 4. Режущие кромки резцов 3 относительно режущих кромок резца 4 выступают по продольной оси на расстояние равное 6—10 мм.Inside the hollow rod 1, a rod 2 passes. Cutters 3 and 4 are attached to the outer and inner rods. The cutting edges of the cutters 3 with respect to the cutting edges of the cutter 4 protrude along the longitudinal axis at a distance of 6-10 mm.

Внутренняя штанга 2 установлена в шпинделе 5 бурильной машины 6. На шпинделе 5 находится переключатель 7, например муфта на резьбе, посредством которой наружная штанга 1 может быть перемещена продольно относительно внутренней штанги 2, вперед к забою шпура на расстояние 12—20 мм.The inner rod 2 is installed in the spindle 5 of the drilling machine 6. On the spindle 5 there is a switch 7, for example a threaded sleeve, by which the outer rod 1 can be moved longitudinally relative to the inner rod 2, forward to the bottom of the hole at a distance of 12-20 mm.

По кольцевому зазору между штангами к забою и по кольцевому зазору между наружной штангой и стенкой шпура от забоя осуществляется очистка шпура от буровой мелочи.On the annular gap between the rods to the bottom and on the annular gap between the outer rod and the wall of the hole from the bottom, the hole is cleaned of drill trifle.

Переключатель состоит из резьбовой муфты 8, навернутой на шпиндель 5. К муфте с другого конца присоединена наружная штанга 1. На наружной круговой поверхности муфты 8 расположено промывочное устройство 9, состоящее из корпуса 10, уплотнительных колец 11 и штуцера 12. Промывочное устройство зафиксировано на корпусе муфты 8 при помощи гайки 13.The switch consists of a threaded sleeve 8, screwed onto the spindle 5. An outer rod 1 is connected to the sleeve from the other end. On the outer circular surface of the sleeve 8 there is a flushing device 9 consisting of a housing 10, o-rings 11 and a nozzle 12. The flushing device is fixed on the housing couplings 8 with nut 13.

Работа описываемого устройства состоит в следующем.The operation of the described device is as follows.

Энергия для разрушения горной породы от бурильной машины 6 передается внутренней штанге 2 и выступающему вперед резцу 3. При затуплении резца 3 вместо операции по извлечению штанги из шпура и замене затупленного резца на острый посредством переключателя 7, наружную штангу I с резцом 4 перемещают к забою шпура. После этого острый резец 4 опережает затупленный резец 3 и бурение шпура продолжают острым резцом.The energy for the destruction of the rock from the drilling machine 6 is transferred to the inner rod 2 and the protruding cutter 3. When the blunt cutter 3 instead of the operation to remove the rod from the hole and replace the blunt cutter with a sharp one through switch 7, the outer rod I with the cutter 4 is moved to the bottom of the hole . After that, the sharp cutter 4 is ahead of the blunt cutter 3 and drilling of the borehole continues with a sharp cutter.

Включение наружной штанги 1 в работу при помощи переключателя 7 производится следующим образом. При остановленном движении штанг 1 и 2 и шпинделя 5 муфту 8 поворачивают относительно шпинделя 5 по резьбе. При этом наружная штанга 1 перемещается относительно внутренней 2, и резец 4 выдвигается вперед на 6—10 мм относительно резца 3. После выдвижения резца 4 закрепляют муфту 8 на шпинделе 5.The inclusion of the outer rod 1 in operation using the switch 7 is as follows. With the stopped movement of the rods 1 and 2 and the spindle 5, the sleeve 8 is rotated relative to the spindle 5 along the thread. In this case, the outer rod 1 is moved relative to the inner 2, and the cutter 4 is advanced 6-10 mm relative to the cutter 3. After the extension of the cutter 4, the clutch 8 is fixed on the spindle 5.

Продолжают бурение шпура. Разрушение забоя осуществляется уже острым резцом 4. При бурении шпура оба резца вращаются с одинаковой скоростью.Continue drilling the hole. Destruction of the face is carried out by a sharp cutter 4. When drilling a hole, both cutters rotate at the same speed.

Пробурив шпур на полную длину штанги, ₅ буровой инструмент извлекают из шпура, затупленные резцы заменяют на острые и бурение нового шпура продолжают в том же порядке, т. е. вначале резцом внутренней штанги, а затем — наружной.After drilling a hole for the full length of the rod, ₅ drilling tools are removed from the hole, blunt cutters are replaced by sharp ones and drilling of a new hole is continued in the same order, i.e., first with an internal rod cutter and then with an external one.

Claims

The invention relates to mining, in particular to devices for rotary drilling of bore-holes. The known crown for rotary column drilling consists of two crown rings with cutters of the same diameter, which are alternately put into operation due to cutting off fasteners 1. The closest to the technical essence of the invention is a device for rotary drilling of wells, including a drill bit with a spindle, flush sleeve, outer and inner concentrically located shtangi with drilling cutters and shanks 2. The purpose of the invention is to provide alternate work of cutters of the same diameter. This is achieved by the fact that the proposed device is equipped with a switch made of a threaded coupling, one end of which is reinforced by means of a threaded connection on the drill stem, and at the other end the outer stem shank is fixed, while the inner strap is fixedly fixed with its shank in the drill spindle. FIG. 1 shows the device, a general view; in fig. 2 - internal bar cutter, front view; in fig. 3 - the same, side view; in fig. 4 - outer bar cutter, front view; in fig. 5 - the same, side view; in fig. 6 - device switch, side view. Inside the hollow rod 1, the bar 2 passes. The cutters 3 and 4 are attached to the outer and inner rods. The cutting edges of the cutters 3 with respect to the cutting edges of the cutter 4 protrude along the longitudinal axis for a distance of 6-10 mm. The inner rod 2 is installed in the spindle 5 of the drilling machine 6. On the spindle 5 there is a switch 7, for example a coupling on the thread, by means of which the outer rod 1 can be moved longitudinally relative to the inner rod 2, forward to the hole face 12-20 mm . On the annular gap between the rods to the face and on the annular gap between the outer rod and the wall of the hole from the bottom, the hole is cleaned from the drilling fines. The switch consists of a threaded coupling 8, screwed onto the spindle 5. An outer rod 1 is attached to the coupling from the other end. On the outer circumferential surface of the coupling 8 there is a flushing device 9, consisting of housing 10, housing 10, sealing rings 11 and fitting 12. Washing device fixed on the housing of the coupling 8 with the help, and the nuts 13. The operation of the described device is as follows. The energy for breaking the rock from the drill machine 6 is transmitted to the inner rod 2 and the cutting tool 3 protruding. When the tool 3 is blunt, instead of removing the rod from the hole and replacing the blunt tool with a sharp switch 7, the external bar with tool 4 is mixed to the hole hole. After that, the sharp cutter 4 is ahead of the blunt cutter 3 and the drilling of the hole continues with a sharp cutter. The outer bar 1 is put into operation by means of the switch 7 as follows. When the movement is stopped, the shtangs 1 and 2 and the pinch 5 the clutch 8 is turned relative to the pinch 5 along the thread. The outer rod 1 is moved relative to the inner 2, and the cutter 4 is advanced 6-10 mm in relation to the cutter 3. After the cutter 4 is extended, the sleeve 8 is fixed on the spindle 5. Continue drilling the hole. The destruction of the bottom is already done with a sharp cutter 4. When drilling a hole, both cutters interlock with the same speed. Having drilled a hole for the full length of the rod, the drilling tool is removed from the hole, the blunted cutters are replaced with sharp ones and the drilling of the new hole is continued in the same order, i.e., first with the cutter of the inner rod and then with the outer one. Apparatus of the invention for rotary drilling of holes, including a drill bit with a spindle, a flush sleeve, outer and inner concentrically arranged rods with drill bits and shanks, characterized in that, in order to ensure the alternate operation of cutters of the same diameter, it is equipped with a switch made of threaded couplings, one end of which is fixed by means of a threaded connection on the drill spindle, and at the other end the outer shank of the outer shaft is strengthened, while the inner rod is fixed secured its caudal spindle drill. Sources of information taken into account during the examination 1. USSR author's certificate number 155776, cl. E 21 V 9/16, 1962.

2. USSR author's certificate number 96536, cl. E 21 C 13/12, 1952.