SU968394A1

SU968394A1 - Tool for cutting profiled indentations in blast-hole walls

Info

Publication number: SU968394A1
Application number: SU813272901A
Authority: SU
Inventors: Виктор Михайлович Кононов
Original assignee: Всесоюзный научно-исследовательский институт транспортного строительства
Priority date: 1981-04-03
Filing date: 1981-04-03
Publication date: 1982-10-23

Description

Изобретение относитс к горному делу, а именно, к буровьом инструментам , примен емым при буровзрывной проходке горных выработок и тоннелей, и дл разделки негабаритов в строительстве .The invention relates to mining, namely, drilling tools used in drilling and blasting of mines and tunnels, and for cutting oversize construction.

Известен инструмент дл образова- НИН профильных углублений на стенках шпуров, включающий корпус с гнездом дл соединени со штангой и с закрепленным в корпусе твердосплавным лезвием 1.A known tool for forming NIN profiled recesses on the walls of boreholes, comprising a housing with a socket for connection with a rod and with a carbide blade 1 fixed in the housing.

Наиболее близким к предлагаемому по технической сущности влгетс инструмент дл нанесени пррфильных углублений на стенках шпуров, включающий корпус с гнездом дп соединени с буровой штангой, кондуктор и твердосплавные лезви 2.Closest to the proposed technical essence is a tool for applying prfilny recesses on the walls of boreholes, including a housing with a socket dp connection with a drill rod, a jig and carbide blades 2.

Недостаток известного инструмента заключаетс в том, что при его использовании необходимо ориентировать направлени профильных углублений в шпуре дл того, чтобы обеспечить их пересечени между собой. Дл этого необходимо перед началом процесса нанесени профильных углублений буровую штангу с инструментом (или непосредственно инструмент) ориентировать вручную на необходимое направлениеA disadvantage of the known tool is that when using it, it is necessary to orient the directions of the profile recesses in the hole in order to intersect them. For this, it is necessary, before starting the process of applying the profile grooves, that the drill rod with the tool (or the tool itself) be oriented manually to the required direction.

наносимых углублений, что требует . значительных потерь времени и труда. Целью изобретени вл етс сокращение трудозатрат за счет упрощени процесса ориентировани профильных углублений.applied recesses that require. significant loss of time and labor. The aim of the invention is to reduce labor costs by simplifying the orientation process of the profile recesses.

Поставленна цель достигаетс тем, что твердосплавные лезви размещены по периметру корпуса со смещением The goal is achieved by the fact that carbide blades are placed around the perimeter of the housing with an offset

10 относительно друг друга на рассто ние, величина которого больше ширины твердосплавных лезвий.10 relative to each other by a distance, the magnitude of which is greater than the width of the carbide blades.

На фиг. 1 изображен инструмент, общий вид; на фиг. 2 - тО же, в сочетании с буровой коронкой (дл совмещени операций по бурению шпура с нанесением профильных углублений; на фиг. 3 - сечение А-А на фиг. 1;FIG. 1 shows an instrument, a general view; in fig. 2 - the same, in combination with the drill bit (for combining the drilling operations of the hole with the application of profile recesses; in Fig. 3 - section A-A in Fig. 1;

на фиг. 4 - сечение Б-Б на фиг. 2. in fig. 4 is a section BB in FIG. 2

Инструмент дл нанесени профильных углублений включает корпус 1, в котором выполнено гнездо 2, например конус или цилиндр, дл соединени с элементом буровой штанги 3. A tool for applying profile recesses includes a housing 1 in which a socket 2, such as a cone or cylinder, is made for connection with the drill rod element 3.

25 Внутри корпуса могут быть выполнены продувочные каналы 4 дл продувки шпура 5. На боковрй поверхности корпуса закреплены твердосплавные лезви , имеющие переднюю б и заднюю 7 части, 25 Inside the casing, purge channels 4 can be made to blow a hole 5. Carbide blades with 7 and 7 front parts are fixed to the side surface of the casing,

Claims

30 with the front part located on a smaller radius from the tool axis than the rear. This embodiment makes it possible to facilitate the working conditions of the rear part of the blades, which has a small cross-sectional area, as a result of which it is exposed to significant dynamic loads. In the front part of the housing there is a guide jig 8 designed to fix the tool in the hole and protect it from distortions. The jig is made in the form of a prism with ribs, which allows to provide the necessary clearance between the walls of the hole and the tool for removing the drill cuttings from the hole. moreover, the ribs for this are offset from the carbide blades. Carbide blades having a width a, in turn, are located around the perimeter of the tool body with a displacement relative to each other by a distance b, the size of which is greater than the width of the carbide blades. In order for the tool to work with the drill bit 9, the tool is mounted on the rod 3 (or on its element) with the possibility of rotating it. The tool works as follows. Insert the tool with the rod into the hole 5 and direct it to the desired direction of cutting the recesses. An actuator, for example, a perforator or a jackhammer (not shown) connected to the rod 3, is then put into operation. The front part 6 of the blades creates an advance slot on the wall of the hole 5, and the rear part 7 forms the necessary profile of the recess 10 and its size. The resulting blade is removed from the hole into the gaps between the hole and tool body 1. The jig 8 with its ribs centers the tool in the hole, and due to the offset of the ribs of the conductor relative to the carbide blades, the latter are not wedged by the sludge. The offset of carbide blades around the tool perimeter allows refusing manual orientation of the profile grooves in the right direction, since it guarantees the intersection of the indicated directions both between holes of one row and between holes of adjacent rows. The application of the proposed device allows to reduce costs due to savings on drilling and explosives. The invention The tool for applying: profiled recesses, on the walls of bore-holes, including a housing with a socket for connection with a drill rod, a jig and carbide blades mounted on the housing, characterized in that, in order to reduce labor costs by simplifying the process of orienting profiled grooves , carbide blades are placed around the perimeter of the housing with an offset relative to each other by a distance larger than the width of the carbide blades. Sources of information taken into account in the examination 1. USSR author's certificate 192728, cl. E 21 C 15/02, 1966.

2. USSR author's certificate in application number 3219581, cl. E 21 C 37/00, 1980 (prototype).

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