Heading machine having cutting unit made of disc tools

• US 8,690,262 B2
• Filed: 01/16/2009
• Issued: 04/08/2014
• Est. Priority Date: 02/15/2008
• Status: Active Grant

• Current Assignee: Sandvik Mining and Construction G.m.b.H. (Sandvik AB)
• Original Assignee: Sandvik Mining and Construction G.m.b.H. (Sandvik AB)
• Inventors: Ebner, Bernhard, Kogler, Peter
• Primary Examiner(s): Singh, Sunil
• Application Number:
  US12/735,675
• Publication Number:
  US 20100314931A1
• Time in Patent Office: 1,908 Days
• Field of Search: 299/31, 299/64, 299 73- 77, 299/78, 299/33, 405/288
• US Class Current: 299/75
• CPC Class Codes: E21C 27/24 by milling means acting on the full working face , i.e. the rotary axis of the tool carrier being substantially parallel to the working face similar machines for tunneling E21D9/1026
• CPC Class Codes: E21D 9/1006 with rotary cutting tools for cutting simultaneously the whole cross-section E21D9/11; drill bits E21B10/00

Abstract

In a heading machine (1, 24) with at least one cutting unit with a rotatably mounted tool holder (10, 39) with disc tools (11, 12, 40, 41), which tool holder is connected in a pivotable manner to the machine frame, the heading machine (1, 24) has a running gear, in particular a crawler track (2), the tool holder (10, 39) is mounted rotatably on an arm (6, 26), which can be pivoted in the vertical direction and the rotational axis (9) of the tool holder (10, 39) runs transversely with respect to the longitudinal axis of the arm (6, 26).

Claims

1. A heading machine, comprising:

a machine frame;

a running gear comprising a crawler track; and

a cutting unit comprising an arm arranged on the machine frame, no more than one disc-shaped tool holder mounted rotatably on the arm, and disc tools held on the tool holder, wherein

the arm is mounted pivotably in a vertical direction relative to the machine frame to pivot about an axis essentially parallel to a plane of a floor, by operation of a vertical pivoting mechanism that moves the arm in the vertical direction,

the arm is mounted pivotably in a horizontal direction relative to the machine frame about an axis essentially perpendicular to the plane of the floor, by operation of a horizontal pivoting mechanism that moves the arm in the horizontal direction,

the tool holder rotates around a rotational axis that runs transversely to a longitudinal axis of the arm, and runs transversely to the axis of the vertical pivot of the arm relative to the machine frame, said tool holder being arranged to allow the disc tools to be brought into contact with material to be removed over part of a circumference of the tool holder, and

a plurality of discs or disc bundles respectively are formed inclined in direction towards the rotational axis of the tool holder.

2. The heading machine according to claim 1, wherein the rotational axis (9) of the tool holder (10, 39) forms an angle of 45°

to 135°

with the longitudinal axis of the arm (6, 26).

3. The heading machine according to claim 1, wherein the discs (11, 41) or disc bundles are arranged on the circumference of the tool holder (10, 39) with a different orientation or cutting direction than other discs (12, 40).

4. The heading machine according to claim 1, wherein the plurality of discs (11, 12, 40, 41) or disc bundles are arranged in a direction inclined to the floor (3).

5. The heading machine according to claim 1, wherein the heading machine (1, 24) has support units (18, 19, 30, 31) for bracing between a roof and the floor (3).

6. The heading machine according to claim 1, wherein a length of the arm (6, 26) is greater than a radius of the disc-shaped tool holder (10, 39).

7. The heading machine according to claim 1, wherein the horizontal pivoting mechanism bears the vertical pivoting mechanism.

8. The heading machine according to claim 7, wherein, on the horizontal pivoting mechanism, a hydraulic pivot drive (29) acts on each of two lateral effect points of the horizontal pivoting mechanism.

9. The heading machine according to claim 7, wherein the vertical pivoting mechanism has a hydraulic pivot drive formed from a plurality of hydraulic cylinder piston assemblies (25), which are arranged in parallel and act on a region of the arm (6, 26) that carries the tool holder (10, 39).

10. The heading machine according to claim 7, wherein the machine frame has a slide guide for a slide (27), said slide (27) being movable in a longitudinal direction of the heading machine, on which slide the arm (6, 26) is mounted pivotally to move in at least one of the vertical direction and the horizontal direction, and an anchor drilling and setting device (38) is arranged on the slide (27) above the horizontal pivoting mechanism.

11. The heading machine according to claim 1, wherein the machine frame has a slide guide for a slide (27), said slide (27) being movable in a longitudinal direction of the heading machine, on which slide the arm (6, 26) is mounted pivotally to move in at least one of the vertical direction and the horizontal direction.

12. The heading machine according to claim 11, wherein the slide guide is formed by guide elements arranged on both sides of a longitudinal center plane of the heading machine.

13. The heading machine according to claim 11, wherein the slide (27) has at least one anchor drilling and setting device (38).

14. The heading machine according to claim 13, wherein the anchor drilling and setting device (38) is guided to be movable in the longitudinal direction of the machine relative to the slide (27).

15. The heading machine according to claim 1, wherein the machine frame has a plurality of support devices positioned to engage against the floor (3) and a roof to brace the machine between the floor (3) and the roof.

16. The heading machine according to claim 15, wherein the support devices positioned to engage against the floor are formed by supporting feet (31) connected pivotably to the machine frame and acted upon by hydraulic cylinder piston assemblies (33).

17. The heading machine according to claim 15, wherein the support devices (30) positioned to engage against the roof together bear a support frame (35), and a roof cap (15, 36) is movably arranged on the support frame (35) to move in a longitudinal direction of the machine.

18. The heading machine according to claim 1, further comprising a conveying device (5, 43) coupled to be pivotable in a horizontal direction at a rear end of the machine.

19. The heading machine according to claim 1, further comprising a power supply unit (37) coupled to be pivotable in a horizontal direction at a rear end of the machine.