WO2012058706A2

WO2012058706A2 - Full face tunneling machine

Info

Publication number: WO2012058706A2
Application number: PCT/AT2011/000447
Authority: WO
Inventors: Manfred Meier; Franz Wels; Karl Lerchbaum; Uwe Restner; Bernhard Ebner; Hubert Kargl; Ralf Grief
Original assignee: Sandvik Mining And Construction G.M.B.H.
Priority date: 2010-11-05
Filing date: 2011-11-03
Publication date: 2012-05-10
Also published as: WO2012058706A3; AT510656A1

Abstract

The invention relates to a full face tunneling machine (1) comprising a base frame (2) having a chassis (13), and at least one cutting system (9). Said cutting system comprises at least one first cutting device (11, 24) having a tool support (14, 26) that is rotatably mounted about an axis of rotation (15, 25) extending in the longitudinal direction of the machine and that can be driven to rotate, and at least one second cutting device (12, 28) having a tool support that is rotatably mounted about an axis of rotation (13, 29) extending horizontally and at a right angle to the longitudinal direction of the machine and that can be driven to rotate, each tool support carrying a plurality of cutting tools (16, 22, 27, 30). The at least one second cutting device (12, 28) is set back with respect to the at least one first cutting device (11, 24) in the longitudinal direction of the machine and is designed as a secondary cutting device. The axes of rotation (15, 25, 13, 28) of the at least one first cutting device (11, 24) and the at least one second cutting device (12, 28) lie substantially in the same horizontal plane, the at least one first cutting device (11, 24) and the at least one second cutting device (12, 28) having substantially identical cutting diameters and carrying identical cutting tools (16, 12, 27, 30), especially rolling cutting tools.

Description

Full cut heading machine

The invention relates to a Vollschnittstreckenvortriebsma- machine comprising a chassis having Grundrah- men and at least one cutting unit, the at least one first cutting device with a rotatably mounted about a rotational axis extending in the machine longitudinal direction, rotatably driven tool carrier and at least one second cutting device with a transverse to a to the machine longitudinal direction and horizontally extending rotation axis rotatably mounted, for rotation driven tool carrier, wherein the tool carriers each carrying a plurality of cutting tools, wherein the at least one second cutting device with respect to the at least one first cutting device set back in the machine longitudinal direction and formed as Nachschneideinrichtung.

Such a full-cut heading machine of the AT, for example, to remove 504 281 A2, in which an about an axis extending in the advancing direction of the axis of rotation rotatably supported drill head in order to achieve a broadened in Soh ^¬ lenbereich sole transversely to the axis of rotation of the drill head rotatably mounted rollers arranged downstream. The downstream cutting rollers are used for regrooving the sole and the side impact.

Similar machines with core drills and Nachschneideinrichtungen are known from the documents DE 2507087 AI, DE 3410121A1 and US 3,979,151 A. The Nachschneideinrichtungen are not rigidly arranged on the cutting arm, but pivotally formed to perform a profiling of the lateral impact and the ridges. Also in WO 2007/075149 a tunneling machine with Nachschneideinrichtungen is described. The cutting tool axes of the regrooving devices are aligned parallel to the center of gravity.

The tunneling machines known from the prior art can not be used in particular for reasons of their height without weite ^¬ res low route ^profiles and for cutting hard stone.

The invention now aims to provide a track driving machine for hard rock use, which is suitable for low route profiles and with the continuous propulsion is made possible. In particular, a full-surface cutting operation should succeed over the entire profile width and profile height. The machine should be designed to be sufficiently compact and it should also be ensured with the downstream mining tools sufficient propulsion power at high cube compressive strength or hard rock.

In order to achieve this object, the full-section conveyor drive machine of the type mentioned in the introduction is substantially developed in such a way that the axes of rotation of the at least one first cutting device and the at least one second cutting device lie substantially in the same horizontal plane and that the at least one first cutting device and the at least a second cutting device having substantially the same cutting diameter and the same cutting tools, in particular rolling cutting tools wear. Because now the Nachschneideinrichtungen the same Cutting diameter as the Hauptschneidvorri- chung, over the entire profile width and the entire profile height a full-surface cutting operation is possible, the arrangement of the at least one second Schneidvorrich- device as Nachschneideinrichtung allows to achieve a low but sufficiently wide cutting profile. This is the case in particular when, as is the case with a preferred development, at least three cutting devices are used.

A particularly compact design is preferably achieved when the at least one second cutting device is designed as a cutting roller, which carries at its periphery a plurality of cutting tools.

Especially in combination with the first Schneidvorrich ^¬ tion results in the hard rock use high propulsive power, wherein it is preferably provided that the at least one first cutting device is designed in the manner of a core drill with arranged on the face facing the end face cutting tools. The high 'propulsive power results here also in that it ^¬ inventively carrying at least one first cutter and at least one second cutting apparatus, the same chen cutting tools, in particular rolling cutter ^¬ tools. The rolling cutting tools can be preferred as a roller chisel or disc tools or the like. be educated. The at least one first cutting device and the at least one second cutting device can be combined with one another in different ways. According to a first preferred embodiment, provision is made for hen, that a centrally arranged first cutting device are arranged downstream of two laterally arranged second cutting devices. With such an arrangement of the cutting devices, a rectangular profile can be ascended.

In an alternative embodiment, it is provided that two lateral first cutting devices are arranged downstream of a centrally arranged second cutting device. In this design, an approximately oval track profile can be achieved.

In order that between the cutting profile achieved by the at least one first cutting device and the cutting profile achieved by the at least one second cutting device no cutting gore or rock remains remain, a preferred embodiment provides that the rectangular cutting profile of the second cutting device and the circular cutting profile of the first cutting device each other in Machine overlap seen overlap. In particular, it is advantageous if the overlap corresponds to at least 25% of the diameter of the circular cutting profile of the first cutting device.

In order to increase the cutting performance, especially in hard rock and to achieve especially in a hard rock with a cube compressive strength of 150 - 300 MPa high propulsive power, provides a preferred development that the cutting tools include discs or disc packets, each in a rigid on Tool carrier mounted bearings are rotatably mounted. Such disc packets are also used for example in so-called Raise- Borern, with such cutting tools the Cutting edges of the discs can be arranged so close together that extremely small cutting line distances between the individual cutting rings result and thus a higher cutting performance can be achieved even with hard rock. In particular, a cutting line spacing of max. 50 mm achievable. If, as corresponds to a preferred development, the disc packets carry at their periphery a plurality of preferably arranged in the circumferential direction rows of cutting inserts, the cutting performance is further increased, wherein the cutting inserts formed in particular of cemented carbide inserts the rock due to the substantially perpendicular to Working face breaking introduced cutting forces. Alternatively, instead of disc packs, it is also possible to provide simple rollers which carry a large number of cutting inserts on their circumference.

For the rotatable mounting of the disc packs or rollers on the tool carrier, a bearing is required which has a corresponding space requirement, in particular in the axial direction of the tool carrier, so that the cutting edges or inserts of the disc packs or rollers do not extend right up to the edges of the Tool carrier can be effective, and this in particular when rotation axes of the disk packages or rollers parallel to the axis of rotation of the tool carrier. To remedy this situation, a preferred development provides that on the tool carrier of the at least one second cutting device a plurality of disc packets with parallel to the axis of rotation of the tool carrier axis of rotation and a plurality of disc packets are provided with the axis of rotation of the tool carrier inclined rotation axis. The disc axis having a tilted axis of rotation Parcels can be arranged at the edges of the tool carrier and inclined to the respective edge. These disk carriers are thus set obliquely outwards, so that the required free cut is given to the individual tool carriers. An optimized geometry can be achieved to the effect here is that an inclined Rotati ^¬ onsachse having Disk packets have a frusto-conical peripheral or enveloping surface. Advantageously, the tool carriers are guided displaceably in the machine longitudinal direction relative to the base frame. The displacement drive is preferably formed by hydraulic cylinder piston units. With the aid of the displacement drive, the tool carriers can be pushed forward continuously, thus ensuring continuous propulsion. In particular, the first and second tool carriers are displaced simultaneously and together in the machine longitudinal direction.

A particularly simple construction results when the diameter of the tool carrier together with the cutting tools corresponds to the profile profile height. This ensures that the cutting tools edit the working face over the entire section profile height without it being necessary for this to arrange the tool carriers on a cantilever arm or the like pivotable in the vertical direction. The tool carriers are thus not displaceable relative to the base frame in the vertical direction in this case.

In order to be able to safely absorb the high cutting forces, a further preferred embodiment provides that the base frame can be extended against the ridges and possibly the sole Stamp in front of and behind the chassis has, in order to clamp the route driving machine within the track.

In order to ensure in a simple manner the removal of dissolved rock from the working face in the direction of a removal means, a preferred embodiment provides that the tool carrier of the at least one first cutting device carries loading blades at its circumference, which supports the dissolved rock in the interior of the tool carrier feed conveyor provided. In this way, the dissolved rock is conveyed by the trained as a core drill first cutter back to the Nachschneideinrichtungen and in particular to the transverse to the direction of advancement cutting rollers, which in turn may have in turn funding, with which the dissolved rock finally on a in Machine longitudinal direction running Abfördermittel can be abandoned. The invention will be explained in more detail with reference to embodiments shown schematically in the drawing. In this Fig.l show a perspective In ^¬ view of a first design of the full-cut heading machine according to the invention, Figure 2 is a plan view of the machine according to Fig.l, Fig.3 is a front view of the machine according to Fig.l, Fig.4 a perspective ei view ^¬ ner second design of the invention Vollschnittstre- ckenvortriebsmaschine, Figure 5 is a plan view of the machine of FIG .4 and 6 is a front view of the machine of FIG..

In FIG. 1 and FIG. 2, the full-width section tunneling machine is designated 1 and has a base frame 2, which carries a crawler chassis 3. The base frame 2 has on both sides of the machine longitudinal center plane 4 in front of and behind the crawler undercarriage 3 against the ridge and sole extendable punches 5, with which the Streckenvortriebs- machine 1 can be braced within the route. A trailing unit is denoted by 6 and has, inter alia, a 7 indicated schematically power plant and a separate crawler chassis 8. The cutting unit is generally designated 9 and consists of a plurality of cutting devices, each formed by a tool carrier carrying a plurality of cutting tools, as will be explained in more detail below. The cutting unit 9 is associated with a loading device, not shown, which collects the abgeschr- ämte rock and passes to a centrally arranged, extending in the machine longitudinal direction conveyor. The conveyor is in the rear, by the trailing unit 6 projecting rearward portion, formed as a pivot conveyor unit 10.

In the design according to FIGS. 1 to 3, the cutting tool consists of a first cutting device 11, which is designed as a core drill, and furthermore two cutting drums 12 arranged downstream of the core drill 11 and designed as regrooving units. The cutting drums 12 consist of roller-type Tool carriers, which are rotatably mounted about a transverse to the machine longitudinal axis of rotation 13 and driven for rotation. The roller-like tool carriers carry on their circumference in each case a plurality of disc packs 22. The core drill 11 has a tool carrier 14, which is rotatably mounted about an axis of rotation 15 extending in the machine longitudinal direction and driven for rotation about this axis. The core drill 11 has, like the cutting rollers 12, a plurality of cutting tools 16, which are also formed as a disc tools. Both the tool carrier 14 of the core drilling ^¬ rers 11 and the tool holder of the cutting rollers 12 are rotatably mounted on a common support 17th The carrier 17 is mounted relative to the base frame 2 in the direction of the double arrow 18, ie in the machine longitudinal direction, by means of schematically indicated cylinder piston units 19.

At the periphery of the core drill 11 loading buckets 20 are arranged, which pass the dissolved material into a provided in the interior of the core ^¬ drill 11 groove, which gives the material to the cutting rollers 12. The cutting rollers 12 further convey the dissolved rock, wherein a blade-shaped shielding wall 21 corresponding to the contour of the cutting ^rollers 12 has a central opening through which the dissolved Ge ^¬ stone reaches a central discharge conveyor, which is downstream of the cutting rollers 12.

In the front view according to FIG. 3 it can be seen that the cutting diameter of the core drill 11 essentially corresponds to the diameter of the two downstream cutting rollers 12, so that overall a rectangular cutting profile can be achieved. Furthermore, it can be seen that the cutting rollers 12 have a plurality of disc packs 22, which are each mounted rotatably about a parallel to the axis of rotation 13 extending axis of rotation in a bearing mounted on the tool carrier bearing. At the outer edges of the cutting rollers 12 disc packs 23 are arranged with axes of rotation inclined to the rotation axis 13, so that the respective disc packets 23 are each directed obliquely outward. It can also be seen that the core drilling 11 also has a plurality of disc packs 16, wherein at least a part of the disc packs is rotatably mounted about axes of rotation which have a component extending in the radial direction of the core drill 11.

In the second design according to FIGS. 4 to 6, the same reference numerals are used for those parts which are identical or comparable to the first design according to FIGS. Unless otherwise stated, the mode of operation of the individual components corresponds to the mode of operation of the components described with reference to FIGS. As a consequence, only the differences will be discussed. The cutting tool 9 of the second type shown in FIGS. To 6 consists of two core drills 24, which are formed by tool carriers 26 rotating about a rotational axis 25 extending in the machine longitudinal direction and having a plurality of disc packs 27 on their front side. Between the two core drills 24, a downstream cutting roller 28 is provided, which is designed as Nachschneideinheit and has a rotatably mounted about a transverse to the machine longitudinal axis of rotation 29 and driven for rotation about this rotation axis ^¬ cylindrical tool carrier, at its periphery a plurality of disc packages 30 has. The cutting roll 28 as well as the two Kernschnei ^¬ 24 are rotatably gela ^¬ annealed to a common carrier 17, which is mounted displaceably in the direction of the double arrow 18 in machines ^¬ longitudinal direction, wherein the encryption slide power of two on both sides of the machine longitudinal center plane 15 arranged hydraulic cylinder piston units 19 is formed. PT / EU2011 / 000447

- 11 -

From the illustration in Figure 6 it can be seen that with egg ^¬ ner such arrangement of the cutting devices, a substantially oval cutting profile can be achieved. The core drill 24 are in turn equipped with so-called reaming blades 31 that the geschrämte material in an opening provided in the axis 25 of the core drill 24 conveying trough (not shown) is passed, so that this geschrämte material fed via the downstream cutting roller 28 on the running in Maschi ^¬ nenlängsrichtung conveyor becomes.

Claims

Claims:

A full-line hauling machine comprising a base frame (2) having a landing gear (3) and at least one cutting tool (9) having at least one first cutting device (11, 24) rotatably mounted around a rotational axis (15, 25) in the machine longitudinal direction , to the rotation drivable tool carrier (14, 26) and at least one second cutting device (12, 28) with a about a transverse to the machine longitudinal direction and horizontally extending axis of rotation (13, 29) rotatably mounted, for rotation drivable tool carrier, wherein the tool carrier respectively a plurality of cutting tools (16, 22, 27, 30) bear, wherein the at least one second cutting device (12, 28) relative to the at least one first cutting device (11, 24) set back in the machine longitudinal direction and formed as Nachschneideinrichtung, characterized the axes of rotation (15, 25, 13, 28) of the at least one first S tapping device (11, 24) and the at least one second cutting device (12, 28) lie substantially in the same horizontal plane and that the at least one first cutting device (11, 24) and the at least one second cutting device (12, 28) substantially have the same cutting diameter and the same cutting tools (16, 12, 27, 30), in particular rolling cutting tools wear.

2. Vollschnittstreckenvortriebsmaschine according to claim 1, characterized in that the at least one second

Cutting device (12, 28) is designed as a cutting roller, which carries at its periphery a plurality of cutting tools (22, 30). - 13 -

3. full-section tunneling machine according to claim 1 or 2, characterized in that the at least one first cutting device (11, 24) in the manner of a Kernboher- rers arranged on the face facing the working face end cutting tools (16, 27) is formed.

4. Vollschnittstreckenvortriebsmaschine according to claim 1, 2 or 3, characterized in that a centrally arranged first cutting device (11) are arranged downstream of two laterally arranged second cutting devices (12).

5. full-section tunneling machine according to claim 1, 2 or 3, characterized in that two lateral first cutting devices (24) is arranged downstream of a centrally disposed second cutting device (28).

6. Vollschnittstreckenvortriebsmaschine according to one of claims 1 to 5, characterized in that the rectangular cutting profile of the second cutting device (12, 28) and the circular cutting profile of the first cutting ^¬ device (11, 24) overlap seen in the machine longitudinal direction.

7. Vollschnittstreckenvortriebsmaschine according to claim 6, characterized in that the overlap corresponds to at least 25% of the diameter of the circular cutting profile of the ers ^¬ th cutting device (11, 28).

8. Full-section tunneling machine according to one of claims 1 to 7, characterized in that the cutting tools (16, 22, 27, 30) discs or disc packets - 14 - which are each rotatably mounted in a rigidly on the tool ^carrier be ^¬ fixed bearing.

9. Vollschnittstreckenvortriebsmaschine according to claim 8, characterized in that the disc packets carry on their order ^¬ catch a plurality of preferably arranged in circumferentially extending rows of cutting inserts.

10. Vollschnittstreckenvortriebsmaschine according to claim 8 or 9, characterized in that on the tool carrier of the at least one second cutting device (12, 28) a plurality of disc packs (22) parallel to Rota ^¬ tion axis (13, 29) of the tool carrier extending Rota ^¬ tion axis and a plurality of disc packets (23) are provided with the rotation axis (13, 29) of the tool carrier inclined extending axis of rotation.

11. Vollschnittstreckenvortriebsmaschine according to claim 10, characterized in that the inclined axis of rotation having disc packets (23) have a frusto-conical ^¬ circumference or envelope surface.

12. Vollschnittstreckenvortriebsmaschine according to claim 10 or 11, characterized in that the inclined axis of rotation having disc packets (23) are arranged on at least one edge of the tool carrier and are inclined to the respective edge.

13. Full-section tunneling machine according to one of claims 1 to 12, characterized in that the tool carrier (14, 26) of the at least one first cutting device (11, 24) carries on its circumference loading blades, the - 15 - the dissolved rock a in the interior of the tool carrier (14, 26) provided conveyor trough.

14. full-section conveyor tunneling machine according to one of claims 1 to 13, characterized in that the tool carrier in the machine longitudinal direction (18) are guided displaceable relative to the base frame.

15. full-section conveyor tunneling machine according to one of claims 1 to 14, characterized in that the tool carriers are mounted on a common, in the machine longitudinal direction (18) relative to the base frame (2) slidably guided carrier (17).

16. Full-section tunneling machine according to one of claims 1 to 15, characterized in that the diameter of the tool carrier together with the cutting tools corresponds to the section profile height.

17. Full-section tunneling machine according to one of claims 1 to 16, characterized in that on the base frame (2) in front of and behind the chassis (3) against the ridges and possibly against the sole extendable punch (5) are arranged.