US 2026/0151773 A1 · WEAR COMPONENT INSTALLATION AND RETENTION SYSTEMS FOR JAW CRUSHERS

Abstract

Systems and methods for installing wear components in a jaw crusher without requiring personnel to enter the crushing chamber. In one aspect, a liner assembly includes locating features that engage corresponding pins on a crusher frame to automatically align the assembly for the installation of external fasteners. In another aspect, a jaw die retention system uses externally operated jacking members to push a retaining wedge and jaw die into a “service position,” allowing the jaw die to be safely rigged and replaced from outside the crusher. The jacking members are then retracted, and an external retaining fastener is tightened to pull the die into its “operational position.” These systems can be applied to both stationary and movable jaws, significantly improving maintenance, safety and efficiency.

Claims17

Dependent claims

A liner assembly for a jaw crusher comprising:

an upper liner segment and a lower liner segment;
at least one connection fastener connecting the upper liner segment to the lower liner segment, the liner assembly defining a plurality of fastener holes;
and
at least one locating feature disposed on at least one of the upper or lower liner segments,
wherein the at least one locating feature is configured to engage a corresponding locating feature on the jaw crusher to automatically position the liner assembly such that the plurality of fastener holes are aligned with corresponding fastener hole openings in the crusher frame, thereby preparing the liner assembly for installation onto the jaw crusher without requiring personnel to enter a crushing chamber thereof.

2 more elements

A method of installing a liner assembly in a jaw crusher, comprising:

providing a jaw crusher frame having a plurality of locating pins installed in an interior sidewall and a plurality of frame fastener holes accessible from an exterior side of the frame;
providing a liner assembly comprising an upper liner segment connected to a lower liner segment, the liner assembly having an integrated lifting hole and a plurality of locating tabs;
attaching lifting equipment to the integrated lifting hole from above the jaw crusher;
lowering the liner assembly as a single unit into a crushing chamber of the jaw crusher;
engaging the locating tabs with the locating pins, thereby automatically positioning the liner assembly such that fastener holes in the liner assembly align with the frame fastener holes;
and
installing frame fasteners through the aligned fastener holes from the exterior side of the frame to secure the liner assembly,
wherein the entire installation is performed without personnel entering the crushing chamber.

5 more elements

Dependencies are inferred from the claim text.

Wear component installation and retention systems for jaw crushers

Life of this patent

Wear component installation and retention systems for jaw crushers

Life of this patent

Abstract

Claims17