RESOURCE-SAVING HIGH-PERFORMANCE METHOD FOR THE DISINTEGRATION OF ROCK PIECES AND A JAW CRUSHER FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC B02C1/02 

FIELD: road construction; mining industry.

SUBSTANCE: group of inventions relates to a method for the disintegration of pieces of rock and a jaw crusher for its implementation, which can be used in the road construction and mining industry. It can be used for the production of crushed stone, gravel and charge concentrate. The method consists in the fact that pieces of rock are crushed by a jaw crusher, where pieces of rock are loaded into the wedge-shaped crushing chamber of the jaw crusher through its upper loading opening 10 and distributed in layers under their own weight in horizontal rows in accordance with their transverse sizes. Cyclic destruction of rock pieces is carried out by means of the contact compression between jaws 1 and 2 of the crusher at the moments of the working stroke of the jaws, and unloading of the rock pieces is carried out through the lower opening of the crushing chamber at the moments of their idle run. At the same time, contact compression of rock pieces is carried out by synchronous movement of both jaws 1 and 2 towards their total convergence. Each horizontal row of rock pieces is compressed by jaws 1 and 2 of the crusher with the possibility of providing linear deformation of rock pieces with their rupture mainly into two parts with a single force impact. The jaw crusher for the implementation of the above method contains a crushing chamber, an electric motor, a crank mechanism, a V-belt drive, a flywheel, jaws 1 and 2 installed inside the crushing chamber, one of which has an upper suspension and is movable. The movable jaw 2 is suspended on the axis of the crank mechanism with the possibility of swinging. The other jaw 1 is installed with the possibility of rotation relative to the horizontal axis located along the back side of the jaw 1. Jaw 1 is rotated by means of a drive device synchronized with the rocking drive of the movable jaw 2, with the possibility of creating a total compressive deformation of rock pieces when jaws 1 and 2 approach each other at the moments of the working stroke to ensure rupture of rock pieces during a single contact force impact by jaws 1 and 2. The position of the axis of rotation along the height of the crushing chamber is set by means of a vertical movement mechanism depending on the deformation indicators of the destruction of rock pieces of the first and last row of rock pieces.

EFFECT: group of inventions provides intensification of the crushing process.

6 cl, 2 dwg