GRATE BASKET FOR HAMMER CRUSHERS

• US 3,891,152 A
• Filed: 08/08/1973
• Issued: 06/24/1975
• Est. Priority Date: 08/09/1972
• Status: Expired due to Term

• Current Assignee: Kurt Guggenheimer
• Original Assignee: Kurt Guggenheimer
• Inventors: Guggenheimer, Kurt
• Primary Examiner(s): Lake, Roy
• Assistant Examiner(s): Desmond, E. F.
• Application Number:
  US05/386,733
• Time in Patent Office: 685 Days
• Field of Search: 241/88,89.2,88.4,73,74,186R,89
• US Class Current: 241/88.4
• CPC Class Codes: B02C 13/284 Built-in screens

Abstract

A grate basket for hammer crushers composed of at least two segments respectively made up of a plurality of parallel grate basket walls in the form of ring sections arranged coaxially with regard to the rotor and of grate bars extending parallel to the rotor axis while being exchangeably connected to the grate basket walls interconnected by longitudinal connecting elements. The grate basket is characterized primarily in that the grate basket walls are respectively divided into a base wall held by the longitudinal connecting elements and into a bar carrier which is adapted to receive the grate bars and which is secured against rotation in circumferential direction and against displacement in axial direction, the grate bar carrier being exchangeably connected to the inner surface of the base wall.

Claims

1. A grate basket for hammer crushers, which includes a rotor, at least two segmental members, each of said segmental members comprising a plurality of subdivided wall members arranged parallel and in spaced relationship to each other and being located coaxially with regard to said rotor, a plurality of grate bars extending substantially parallel to the axis of said rotor, connecting means extending in the axial direction of said grate basket and being exchangeably connected to said wall members, said subdivided wall members respectively comprising a base wall and bar carrier means, said connecting means supporting said base walls, and said grate bars being supported by said bar carrier means, and means for preventing said bar carrier means from moving in the circumferential direction of said rotor and from displacement in axial direction, said bar carrier means being readily interchangeable and detachably connected to said base walls.

2. A grate basket for hammer crushers, which includes a rotor, at least two segmental members comprising a plurality of wall members arranged parallel and in spaced relationship to each other and being located coaxially with regard to said rotor, a plurality of grate bars extending substantially parallel to the axis of said rotor, connecting means extending in the axial direction of said grate basket and being exchangeably connected to said wall members, said wall members respectively comprising a base wall and bar carrier means, said connecting means supporting said base walls, and said grate bars being supported by said bar carrier means, and means for preventing said bar carrier means from moving in the circumferential direction of said rotor and from displacement in axial direction, said bar carrier means being detachably connected to said base walls, said bar carrier means including bore means, and comprising clamping screw means insertable in said bore means for connecting said bar carrier means to said base walls, and lashing means for resting said clamping screw means onto the inner surface of said base walls.

3. A grate basket according to claim 2, in which each of said clamping screw means comprises two screw bolts extending substantially parallel to each other.

4. A grate basket for hammer crushers, which includes a rotor, at least two segmental members comprising a plurality of wall members arranged parallel and in spaced relationship to each other and being located coaxially with regard to said rotor, a plurality of grate bars extending substantially parallel to the axis of said rotor, connecting means extending in the axial direction of said grate basket and being exchangeably connected to said wall members, said wall members respectively comprising a base wall and bar carrier means, said connecting means supporting said base walls, and said grate bars being supported by said bar carrier means, and means for preventing said bar carrier means from moving in the circumferential direction of said rotor and from displacement in axial direction, said bar carrier means being detachably connected to said base walls, said base walls being provided with recess means, and said bar carrier means being proviDed with protrusion means for engaging said recess means to prevent said bar carrier means from turning in the circumferential direction of said rotor, guiding strip means being provided which extend substantially parallel to said connecting means and are provided with slots for respectively receiving said bar carrier means, said bar carrier means being prevented by said guiding strip means from accidental displacement in axial direction of said bar carrier means.

5. A grate basket for hammer crushers, which includes a rotor, at least two segmental members comprising a plurality of wall members arranged parallel and in spaced relationship to each other and being located coaxially with regard to said rotor, a plurality of grate bars extending substantially parallel to the axis of said rotor, connecting means extending in the axial direction of said grate basket and being exchangeably connected to said wall members, said wall members respectively comprising a base wall and bar carrier means, said connecting means supporting said base walls, and said grate bars being supported by said bar carrier means, and means for preventing said bar carrier means from moving in the circumferential direction of said rotor and from displacement in axial direction, said bar carrier means being detachably connected to said base walls, said wall members being provided with grooves having an undercut section, and said grate bars within the region of said wall members being provided with holding noses for engagement with said undercut sections to hold said grate bars in said grooves, said grate bars being insertable into said grooves in axial direction of said grate bars.

6. A grate basket according to claim 5, in which said grate bars have a trapezoidal cross section.

7. A grate basket according to claim 5, in which said grate bars have a polygonal cross section.

8. A grate basket according to claim 5, in which said grate bars protrude from said grooves in the direction toward said rotor.