Apparatus and Methods for Impact Load Transfer to Disc Chisels of Rock Processing Machines

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This invention introduces advanced mechanical devices and methodologies to improve how impact and vibrational forces are transmitted to disk cutters (diskenmeißel) in rock processing machines. By designing a special arrangement with an intermediary striking element and various damping and spring elements, the invention directs impact forces directly to the disk cutter without overloading its bearings. This minimizes wear and tear on the bearings, reducing failures and significantly increasing the service life and performance reliability of the cutting tools used in rock excavation, mining, and tunneling equipment.

Use CasesContent extracted from patent full text and abstract with AI.

• Tunnel boring machines and mining equipment that cut or fracture rock using disk cutters.
• Hydraulic or pneumatic hammer systems in construction, mining, or quarrying for more effective rock breaking.
• Upgrade retrofit kits for existing drilling and cutting machines to extend operational life and reduce maintenance.
• Heavy-duty geological research equipment for efficient core sampling or material extraction from hard rock.
• Earth drilling rigs used for construction, foundation laying, or resource extraction (e.g., oil/gas drilling through rock layers).

BenefitsContent extracted from patent full text and abstract with AI.

• Greatly reduces the mechanical load and stress on the bearings of disk cutters, extending their lifespan.
• Increases the reliability and uptime of rock cutting machinery by reducing bearing failures.
• Allows for higher impact forces to be applied without risking bearing damage, resulting in faster and more efficient rock cutting.
• Lowers maintenance costs and equipment downtime due to less frequent bearing replacement and repair.
• Provides stable and precise operation of cutting tools, even during high-impact usage, improving the overall quality of rock processing.

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Patent Abstract

The aim of the invention is to reduce the loading of the bearing of disk-shaped drill bits and roller bits caused by impact and vibratory stress produced, e.g. by pneumatic and hydraulic hammers of rock breaking machines or similar machines and to thereby increase the reliability and service life of the bearing. The disk-shaped drill bit (2) is mounted on a rotation axis (10) via bearings (11) by means of a fork (7), said fork (7) being pivotably mounted on a frame (4) that is rigidly fastened to the device. A compression spring (8) is arranged between the fork (7) and the frame (4) and an intermediate percussion element (3) the lower end of which is U-shaped and thus encloses the disk-shaped drill bit (2) on both sides, touching the main body (26) of the disk-shaped drill bit, and the upper end of which extends up to a ram (13) which is a constituent part of a percussion device (1) and to the right-hand side and to the left-hand side of the intermediate percussion element (3), at the top, coupling elements (5), and at the bottom, coupling rods (6) are mounted on pins (31) of the intermediate percussion element (3), the coupling elements (5) and the other ends of the coupling rods (6) being mounted on the frame (4). The coupling elements (5), the coupling rods (6) and the fork (7) run in parallel and, at the center of the coupling elements (5), respective spring-mounted coupling elements (9) are mounted and the other ends thereof are mounted centrally on the fork (7), each spring-mounted coupling element (9) having a spring (15), a sprung element (17) and a threaded bush (16).