Moveable jaw mounting assembly

Patent metadata

Field	Value
Publication number	US-10399080-B2
Application number	US-201314759925-A
Country	US
Kind code	B2
Filing date	Dec 3, 2013
Priority date	Jan 9, 2013
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A movable jaw mounting assembly to provide adjustment of the close side setting (CSS) of a movable jaw and to act as a retraction assembly or assist with retraction. The assembly includes a pair of linear actuators that are coupled between the back frame end and a region of the toggle unit so as to move the toggle unit towards and away from the back frame end to allow insertion and removal of spacers and/or shims.

First claim

The invention claimed is:

1. A movable jaw mounting assembly arranged to provide retraction and positional adjustment of a movable jaw of a jaw crusher relative to a stationary jaw, the jaw mounting assembly comprising:
a load bearing support frame having a part with a force transmission wall configured to transmit impact loading forces associated with the moveable jaw to the support frame;
a toggle unit having a first toggle end associated with the moveable jaw, a second toggle end mounted, in opposed relationship, to the force transmission wall, a toggle beam forming the second toggle end, and a toggle plate positioned between the first toggle end and the second toggle end;
at least one mechanical actuator arranged to provide a pulling and/or pushing force, the mechanical actuator being attached at a first end to the support frame and at a second end of the toggle unit so as to provide a pulling and/or pushing force to the toggle unit to change a separation distance between the second toggle end and the force transmission wall;
a toggle holder connecting the second end of the at least one actuator to the toggle plate such that the toggle plate and the toggle beam are arranged to move towards the force transmission wall by the at least one actuator to retain pressure on the toggle unit during retraction; and
a mounting bracket attached to the toggle beam and arranged to abut the toggle holder when the actuator is operative to move the toggle beam away from the force transmission wall during adjustment.

2. The assembly as claimed in claim 1 , wherein a force transmission pathway extends through the toggle unit and the force transmission wall, but not through the at least one mechanical actuator.

3. The assembly as claimed in claim 1 , wherein the actuator is mounted at a side wall of the support frame laterally to one side of the toggle unit and attaches to the toggle unit via an aperture in the side wall.

4. The assembly as claimed in claim 3 , wherein the aperture in the side wall of the frame is elongate in a direction between the force transmission wall and the moveable jaw so as to allow a connection between the actuator and toggle unit to slide within the aperture.

5. The assembly as claimed in claim 1 , wherein a first end of the at least one mechanical actuator is mounted at a side wall of the support frame laterally to one side of the toggle unit, and wherein the first end of the at least one mechanical actuator is positioned closer to the moveable jaw than a second end of the actuator.

6. The assembly as claimed in claim 1 , further comprising a plurality of spacers positioned between the force transmission wall and the second toggle end.

7. The assembly as claimed in claim 1 , wherein the toggle unit includes at least one hydraulic toggle actuator positioned between the first and second toggle ends.

8. The assembly as claimed in claim 1 , wherein the toggle unit includes a single toggle plate extending between the first and second toggle ends.

9. The assembly as claimed in claim 1 , further comprising two mechanical actuators mounted at respective side walls of the support frame laterally to either side of the toggle unit.

10. The assembly as claimed in claim 9 , further comprising two elongate apertures extending through the side walls, each aperture being positioned laterally to one side of the toggle unit at a region of the second toggle end.

11. The assembly as claimed in claim 10 , wherein each of the mechanical actuators is pivotally attached via a mounting to the second toggle end.

12. The assembly as claimed in claim 1 , wherein the at least one mechanical actuator includes a linear mechanical actuator including:
a barrel having an internal chamber;
a piston within the chamber and arranged for reciprocating linear sliding movement within the chamber; and
a piston rod attached to the piston and arranged for longitudinal reciprocating extension and retraction relative to the barrel, the rod having a first end positioned furthest from the barrel, wherein the barrel is attached to the support frame and the rod is connected to the toggle plate via the toggle holder.

13. A jaw crusher comprising:
a movable jaw;
a stationary jaw; and
a movable jaw mounting assembly arranged to provide retraction and positional adjustment of the movable jaw relative to the stationary jaw, the jaw mounting assembly including a load bearing support frame arranged to couple at least part of the assembly to the jaw crusher, the support frame having a part with a force transmission wall configured to transmit impact loading forces from the moveable jaw to the support frame, a toggle unit positioned between the force transmission wall and the moveable jaw, the toggle unit having a first toggle end arranged for attachment to the moveable jaw and a second toggle end for mounting in opposed relationship to the force transmission wall, a toggle beam forming the second toggle end, and a toggle plate positioned between the first toggle end and the second toggle end, at least one mechanical actuator arranged to provide a pulling and/or pushing force, the mechanical actuator being attached at a first end to the support frame and at a second end of the toggle unit so as to provide a pulling and/or pushing force to the toggle unit to change a separation distance between the second toggle end and the force transmission wall, a toggle holder connecting the second end of the at least one actuator to the toggle plate such that the toggle plate and the toggle beam are arranged to move towards the force transmission wall by the at least one actuator to retain pressure on the toggle unit during retraction, and a mounting bracket attached to the toggle beam arranged to abut the toggle holder when the actuator is operative to move the toggle plate away from the force transmission wall during adjustment.

14. The assembly as claimed in claim 13 , further comprising a mechanical lock arranged to fix the moveable jaw in an immobile position relative to the stationary jaw.

Assignees

• Sandvik Intellectual Property

Inventors

• Svensson Johan
• Lindberg Marten

Classifications

• B02C1/06

  with double-acting jaws · CPC title

• B02C1/02

  Jaw crushers or pulverisers · CPC title

• B02C1/025 Primary

  Jaw clearance or overload control · CPC title