DE6807089U - STONE DRILLS - Google Patents

Description

The invention relates to a masonry drill, in particular for approximately horizontal earth bores with a shaft, at the front end of which cutting teeth are provided are.

The invention has for its object to design a stone drill of this type so that with a simple structure, earth bores, for example through oil or rock layers, dry, i.e. without Any flush can be done.

In the case of a rock drill, in particular for approximately horizontal earth drilling with a shaft the front end of which is provided with cutting teeth, according to the invention the shaft is thin-walled, a tube forming a cuttings store, on the front end of which the teeth form a tooth crown are arranged. Through this training dr stone drill only cuts an annular channel during use, with the inside of this annular channel lying rubble, rock or the like.

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enters the pipe until the one formed by this pipe Drill cuttings filled 1st; after the cuttings store has been filled, the stone drill is removed from the The borehole is pulled out and the pipe deflated, after which it can be reinserted. This allows without each flush to be drilled.

The shaft tube on the front is useful End with spaced apart protruding Approaches provided on which the teeth are provided

are so that it is put off by the teeth ^ B * ne

Drill dust through the gaps between the approaches

can easily get into the pipe. To simplify the structure of the masonry drill are the approaches formed by recesses, wherein the approaches can be rectangular.

In order to obtain a large standing tent for the masonry drill, the teeth are preferably soldered through or build-up welded hard metal parts.

Another embodiment of the invention is the diameter of the outer flight circle of the teeth larger than the tubular outer diameter knife and the The diameter of the inner diameter of the teeth is smaller than the inner diameter of the pipe, so that jamming of the pipe shank in the borehole is prevented in a simple manner.

As I said, the rear tube section does not have to be be completely closed by a circular disk. In the case of loose stones or rubble, it can be advantageous if the pipe end is interspersed with various openings «. So get that, you don't get in wants to prevent the drillings from escaping at the rear end of the pipe in all cases.

A coupling for connecting the boiler to a drill rod can be prefabricated.

The invention is explained in more detail below with further details; the painting give an embodiment with the essential parts for the invention to scale again · These parts are, as far as they are not easily recognizable from the drawings » explained with reference to the drawings. They are shown in

1 shows an invented stone robot in partially cut side view and without cutting,

FIG. 2 shows the masonry drill according to FIG. 1 in a view from the left with teeth.

VIe the Flg. 1 and 2 show a stone drill bit according to the invention a sylindriechen shaft 1, which through a tube with a relatively thin coat 2 formed 1st.

The front end of the tube 1 is at the front 3 provided with rectangular recesses 4, all of the recesses 4 having the same width and provided evenly distributed over the Itafang are * Through the Äissparungen 4 are rectangular, axially protruding steps 5 are formed, on which 8chneldEflhne 6 in the form of soldered hard metal pieces or by hard metal overlay welding. The width of the incisors 6 is greater

than the thickness of the pipe jacket 2, so that ale

both about the outer circumference and about the The inner circumference of the tube 1 protrudes in such a way that ι the diameter of the one indicated in FIG

outer pitch circle 7 of the teeth 6 larger than

• the outside diameter of the pipe 1 and the

ι Diameter of the inner flight circle 8 smaller

than the inner diameter of the pipe 1.

As I said, the end of the pipe does not have to be completely closed. Furthermore, the coupling 3 piece not necessarily be connected to a drill rod on the masonry drill. It could be without widen ire β directly to the masonry drill Conveyor screw are attached.

Claims (1)

' Expectations 1. Rock drill, in particular for approximately horizontal earth drilling with a shaft at the front End cutting teeth are provided, characterized in that the shaft as a thin-walled, one Pipe forming a drill cuttings store (Daus is formed on the front face of which the teeth (6) are arranged as a ring gear. 2. Stone drill according to claim 1, characterized by that the shaft tube (1) at the front end with spaced apart, protruding Approaches (5) is provided on which the teeth (6) are provided. 3 * masonry bit according to spoke 2, characterized in that that the approaches (5) through recesses (4) are formed. k. Stone drill according to claim 2 or 3, characterized in that the attachments (5) are rectangular. 5 · Stone drill according to one of the preceding claims, characterized in that the approaches (5) are evenly distributed over the circumference. 6. Stone drill according to one of the preceding claims, characterized in that the teeth (6) by preferably soldered or build-up welded Hard metal parts are formed. 6 η y 7. Stone drill according to one of the preceding claims, characterized in that the The diameter of the outer plug circle (7) of the teeth (6) is larger than the outer tube diameter is. 8. Stone drill according to one of the preceding claims, characterized in that the The diameter of the inner plug circle (8) of the teeth (6) is smaller than the inner diameter of the pipe is. 9 · Stone drill bit according to one of the preceding Claims, characterized in that the tube ((1) at the rear end at least is partially closed, preferably by a circular disk (9). 10. Stone drill according to claim 9, characterized in that that a coupling (10) for connection to a drill rod (11) is provided on the circular disc (9).