DE102004012985A1 - Apparatus for propelling routes, tunnels or the like - Google Patents

Abstract

The device for propelling routes, tunnels or the like comprises a drill head that can be driven in rotation about a rotation axis (D) and can be moved in the advancing direction. According to the invention, the drill head (100) comprises an inner part (1) driven about the rotation axis (D) and an outer part (6) likewise concentric with the inner part (1) about the rotation axis (D).

Description

The The invention relates to a device for driving routes, Tunnels or the like with a rotationally driven about a rotation axis and in the advancing direction movable drill head.

From the DE 197 40 078 A1 Such a device is known, in which the drill head carries cutting tools which cover the working face in predetermined tracks.

Of the Invention is based on the object, a generic device develop such that the is increased with her achievable propulsion speed.

These The object is achieved by the recited in claim 1 device solved.

It has been shown that the maximum achievable propulsion speed is significantly increased, if the drill head an inner, driven about the axis of rotation inner Part and concentric with the inner part, also around the axis of rotation driven outer part includes. In other words, the drill head has an inner part which is circular in front view on.

tries have shown that one particularly high increase in the achievable propulsion speed and at the same time an overload avoided by attached to the drill head parts cutting tools is when the inner part of the drill head with higher rotational speed, preferably at twice the speed of rotation as the outer part of the drill head is driven.

Especially it is preferred if the inner part of the drill head a smaller Number of cutting tools per cutting path, preferably half as many Cutting tools per cutting path, as the outer part of the drill head, and thus the same penetration depth is achieved in drilling progress. The effect of increasing the propulsion speed can be by explaining that in particular when operating the inner part at twice the rotational speed a more optimal unwinding speed of the drilling tools in the cutting tracks is achieved as in a one-piece drill head, in the course of the speed the further inside arranged cutting tools is smaller than the one the farther out arranged.

at one of the further particularly preferred structural variant is for each drill head part provided its own main bearing.

Furthermore is - especially preferred - for each Drill head part provided a separate drive, so that the relative speeds, in which the inner and the outer part be driven, individually adjustable.

tries have shown that one particularly uniform degradation of the cuttings is achieved at the working face, if in the radially inner Area of the outer part of the drill head cutting rollers are arranged such that their Roll axis inclined to the axis of rotation opposite to the direction of advance is.

Accordingly it is also preferred if in the radially outer region of the outer part of the drill head cutting rollers are arranged such that their Roll axis is inclined to the axis of rotation in the advancing direction.

Especially suitable cutting rollers, which are equipped with a cutting ring.

At the outer part of the drill head are preferably twice as many cutting rollers as provided on the inner part.

Especially preferred is an embodiment of the drill head according to the invention, at the outer circumference the drill head mounted scratches and / or blades, by means of which Cuttings over a Bohrgutzylinder is fed to a transport device, are attached.

The Invention will now be explained with reference to the drawing.

The whole with 100 designated drill head has an inner part 1 which is circular in front view (view A). It is rotationally driven about a rotation axis D.

At the inner part 1 are inner cutting rollers 2 provided a cutting ring 3 have, which is aligned at right angles to the working face. Also is a series of juxtaposed center cutting rollers 9 intended.

Further, outer cutting rollers 4 at the inner part 1 of the drill head 100 provided, the respective cutting ring is arranged radially outward. Furthermore, the outer cutting rollers 4 mounted such that its roller axis R is inclined in the direction of the axis of rotation D pointing to the working face. This ensures that the cutting ring 5 rolling in a cutting path on the working face whose diameter is about the outer diameter of the in part 1 of the drill head 100 equivalent.

Furthermore, the drill head 100 an outer part 6 on, which is also rotatably mounted about the rotation axis D. It has an annular shape in a front view of the drill head (view A) and is concentric with the inner part 1 arranged. He is with inner cutting rollers 7 , outer cutting rollers 8th as well as caliber cutting rollers 10 equipped, with the outer cutting rollers 8th and the caliber cutting rollers 10 in its embodiment, the inner cutting rollers 2 of the inner part 1 of the drill head 100 correspond, or are similar.

The inner cutting rollers 7 In contrast, correspond in their design, the outer cutting rollers 4 of the inner part 1 of the drill head 100 , However, they are arranged such that their roller axis R is inclined to the rotation axis D back towards the rear. As can be seen from the drawing, the two roller axes R on the side of the working face at an angle of about 145 °.

The inner part 1 and the outer part 6 are stored separately. They also have separate rotary drive devices.

100

wellhead

1

internal part

D

axis of rotation

2

inner cutting rollers

3

cutting ring

4

outer cutting rollers

5

cutting ring

R

roller axis

6

outer part

7

inner cutting rollers

8th

outer cutting rollers

9

Center cutting rollers

10

Caliber cutting rollers

Claims (10)

Apparatus for propelling routes, tunnels or the like, having a drill head which can be driven in rotation about an axis of rotation (D) and which can be moved in the advancing direction ( 100 ), characterized in that the drill head ( 100 ) an about the rotation axis (D) driven, inner part ( 1 ) and concentric with the inner part ( 1 ), also about the rotation axis (D) driven outer part ( 6 ). Device according to claim 1, characterized in that the inner part ( 1 ) at a higher rotational speed, preferably at twice the rotational speed than the outer part ( 6 ) is driven. Device according to claim 1 or 2, characterized in that the inner part ( 1 ) a smaller number of cutting tools per cutting path, preferably half as many cutting tools per cutting path than the outer part ( 6 ) of the drill head ( 100 ). Device according to one of claims 1 to 3, characterized in that for each drill head part ( 1 . 6 ) own main camp is provided. Device according to one of claims 1 to 4, characterized in that for each drill head part ( 1 . 6 ) a separate drive is provided. Device according to one of claims 1 to 5, characterized in that in the radially inner region of the outer part ( 6 ) Cutting rollers ( 7 ) are arranged such that the roller axis (R) to the rotation axis (D) is inclined counter to the direction of advance. Device according to one of claims 1 to 6, characterized in that in the radially outer region of the inner part ( 1 ) Cutting rollers ( 4 ) are arranged such that the roller axis (R) is inclined to the axis of rotation (D) in the advancing direction. Apparatus according to claim 6 or 7, characterized in that the cutting rollers with a cutting ring ( 5 ) are equipped. Device according to claim 8, characterized in that on the outer part ( 6 ) of the drill head ( 100 ) twice as many cutting rollers in a cutting track as on the inner part ( 1 ) are arranged. Device according to one of claims 1 to 9, characterized by on the outer periphery of the drill head ( 100 ) mounted scratches and / or blades, by means of which cuttings on a Bohrgutzylinder a transport device can be fed.