Grate bar for a furnace comprising engaging means

Grate bar according to one of the preceding claims, wherein

• at least one coupling element of the grate bar is adapted to a corresponding engaging element of a first neighbouring grate part such that the elongated recess can only tilt relative to the engaging element of the first neighbouring part by a tilt angle that does not exceed a predetermined maximum tilt angle, and wherein
• at least one engaging element of the grate bar is adapted to a corresponding coupling element of a second neighbouring part such that the engaging element can only tilt relative to the elongated recess of the second neighbouring part by a tilt angle that does not exceed the predetermined maximum tilt angle.

Grate bar according to one of the previous claims, wherein the engaging element has a rectangular cross section, (wherein a height of the rectangular cross section is slightly smaller than the height of an elongated recess of a neighbouring grate bar) and wherein a longitudinal dimension of the rectangular cross section is slightly greater than the height of a corresponding elongated recess of a neighbouring grate bar.

Grate bar according to one of the preceding claims, wherein the elongated recesses are formed out as a gap between two longitudinal protrusions that extend along the grate bar.

Grate bar according to one of the preceding claims, wherein the elongated recesses are formed out as a proximal elongated recess and a distal elongated recess, the recesses having an O-shaped cross section.

Grate bar according to one of the preceding claims, wherein the elongated recesses are formed out as a proximal elongated recess and a distal elongated recess, the recesses having a rectangular cross section.

Grate bar according to one of the preceding claims, wherein the recess is formed out as protrusion of the main body of the grate.

Grate arrangement for a furnace, the grate arrangement comprising an arrangement of fixed and movable grate bars, the fixed and movable grate bars comprising longitudinal recesses and engaging elements according to one of the previous claims, the engaging elements of a grate bar engaging into the longitudinal recesses of a neighbouring part, wherein a longitudinal dimension of the longitudinal is made such that the engaging elements are longitudinally movable in the elongated recesses.

Use of a plurality of grate bars in an incineration plant for the assisting the burning of material during an incineration, comprising

• moving of a grate bar of the plurality of grate bars relative to a neighbouring grate bar of the plurality of grate bars with a reciprocating grate, the moving of the grate bar comprising a movement of an engaging element with two parallel sliding surfaces of the grate bar in a longitudinal recess with to parallel sliding surfaces of the neighbouring grate bar.