Locking bolt assembly for a crusher device

Patent metadata

Field	Value
Publication number	US-10569274-B2
Application number	US-201716095220-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	May 10, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A locking bolt assembly (1) for securing a mantle (40) to a head assembly (60) of a crushing device includes locking bolt (10) having a head portion (10a) and a thread portion (10b); a re-useable thrust plate (30) disposed between the head portion (10a) and a top surface portion (42) of the mantle (40); one or more fasteners (20) for connecting the locking bolt (10) to the re-useable thrust plate (30); and one or more permanent jacking screws (34) for forcing the locking bolt (10) up and the thrust plate (30) down onto the top surface portion (42) of the mantle (40) so that the mantle (40) is secured on the head assembly (60).

First claim

The invention claimed is:

1. A locking bolt assembly ( 1 ) for securing a mantle ( 40 ) to a head assembly ( 60 ) of a crushing device comprising:
a locking bolt ( 10 ) comprising a head portion ( 10 a ) and a thread portion ( 10 b ), the head portion ( 10 b ) having one or more axial bores ( 11 ) there through;
a re-useable thrust plate ( 30 ) disposed between the head portion ( 10 a ) and a top surface portion ( 42 ) of the mantle ( 40 ), the re-useable thrust plate ( 30 ) having one or more axial bores ( 31 ) there through;
one or more fasteners ( 20 ) disposed in and at least partially through the axial bores ( 11 , 31 ) for connecting the locking bolt ( 10 ) to the re-useable thrust plate ( 30 ); and
one or more permanent jacking screws ( 34 ) disposed in and at least partially through the axial bores ( 11 ) for forcing the locking bolt ( 10 ) up and the thrust plate ( 30 ) down onto the top surface portion ( 42 ) of the mantle ( 40 ) so that the mantle ( 40 ) is secured on the head assembly ( 60 ).

2. The locking bolt assembly ( 1 ) of claim 1 , further comprising a gasket ( 38 ) disposed between the head portion ( 10 a ) and the re-useable thrust plate ( 30 ).

3. The locking bolt assembly ( 1 ) of claim 1 , further comprising a protective sleeve ( 33 ) for protecting an outer annular surface of the locking bolt ( 10 ) wherein the protective sleeve ( 33 ) is disposed around an outer annular surface of the head portion ( 10 a ).

4. The locking bolt assembly ( 1 ) of claim 1 , further comprising a feed plate ( 32 ).

5. The locking bolt assembly ( 1 ) of claim 1 , further comprising nuts ( 36 ) disposed in one or more of the axial bores ( 11 ) for accepting the permanent jacking screws ( 34 ).

6. A method for securing a mantle ( 40 ) to a head assembly ( 60 ) of a crushing device comprising:
providing a locking bolt assembly ( 1 ) comprising a locking bolt ( 10 ) having a head portion ( 10 a ) with one or more axial bores ( 11 ) there through and a thread portion ( 10 b ), and a re-useable thrust plate ( 30 ) having one or more axial bores ( 31 ) there through, the re-useable thrust plate ( 30 ) being connected to the head portion ( 10 a ) via one or more fasteners ( 20 ) disposed in and at least partially through the axial bores ( 11 , 31 );
positioning the mantle ( 40 ) on the head assembly ( 60 );
attaching the locking bolt assembly ( 1 ) to the head assembly ( 60 );
inserting a plurality of permanent jacking screws ( 34 ) into and at least partially through the axial bores ( 11 ) of the head portion ( 10 a );
moving the plurality of permanent jacking screws ( 34 ) within the axial bores ( 11 ) such that the permanent jacking screws ( 34 ) create a locking force between the locking bolt assembly ( 1 ) and the head assembly ( 60 ) and the locking bolt ( 10 ) is pushed up and the re-useable thrust plate ( 30 ) is pushed down onto a top surface portion ( 42 ) of the mantle ( 40 ) such that the mantle ( 40 ) is secured on the head assembly ( 60 ).

7. The method of claim 6 , wherein the thrust plate ( 30 ) is positioned on the top surface portion ( 42 ) of the mantle ( 40 ).

8. The method of claim 6 , wherein each of the axial bores ( 11 ) includes a series of internal threads that engage external threads on the permanent jacking screws ( 34 ), wherein the permanent jacking screws ( 34 ) are each rotated to move the permanent jacking screws ( 34 ) to create the locking force between the locking bolt assembly ( 1 ) and the head assembly ( 60 ).

9. The method of claim 6 , further comprising the step of inserting nuts ( 36 ) into one or more of the axial bores ( 11 ), wherein each of the nuts ( 36 ) includes a series of internal threads that engage external threads on the permanent jacking screws ( 34 ), wherein the permanent jacking screws ( 34 ) are each rotated to move the permanent jacking screws ( 34 ) to create the locking force between the locking bolt assembly ( 1 ) and the head assembly ( 60 ).

Assignees

• Smidth As F L

Inventors

• Hopping Philip

Classifications

• B23P19/06

  Screw or nut setting or loosening machines · CPC title

• B23P19/067

  Bolt tensioners (for hand tools B25B29/02) · CPC title

• B02C2/005 Primary

  Lining · CPC title

• Y10T29/4994

  Radially expanding internal tube · CPC title

• B02C2/04

  with vertical axis · CPC title