BC630
YZH
Product Description
In primary crushing, the bottleneck is rarely the average rock size; it is the occasional big, awkward boulder that lodges in the crusher mouth or hangs across the grizzly. The YZH Fixed Rockbreaker Boom is installed over or beside that zone, using an articulated boom and hydraulic breaker to reach the choke point, break the obstruction, and rake loose material so the crusher can return to steady operation.
Instead of mobilizing excavators or sending people with bars into confined spaces, the plant treats oversize as a routine task handled from a dedicated fixed boom station that is always in position and ready to work.
Oversized and extremely hard rocks in the crusher or on the grizzly
Primary jaw and impact crushers can be stopped by a few rocks that are too large, too hard, or too flat to pass the opening or grizzly spacing.
The fixed rockbreaker boom positions its breaker directly onto these pieces, delivering impact energy until they fracture into smaller fragments that pass easily into or through the equipment.
Blocked transport routes to the crusher
Oversize can also accumulate in chutes, rockboxes, or transfer points leading to the crusher, starving the machine and forcing manual clearing.
With proper reach and articulation, the boom can rake and break material in these areas as well, restoring access and reducing downtime.
Safety risk and cost from manual breaking and mobile equipment
Using handheld tools or moving excavators onto the edge of hoppers and grizzlies exposes personnel and machines to rockfall, flyrock, and unstable piles.
A fixed rockbreaker boom, controlled from a steering panel or radio remote, removes people from the immediate hazard zone while providing better precision than heavy mobile machines.
According to YZH’s fixed rockbreaker boom system concept, the station typically includes:
Rotating upper structure and fixed base
The upper part of the frame or swivel console carries the lift boom and arm, and can rotate (often up to 360° depending on model), allowing coverage of the crusher mouth, grizzly, and nearby rock pile.
The lower frame is firmly fixed to a concrete or steel base, designed to absorb and distribute impact and reaction forces safely into the structure.
Lift boom, arm, and hydraulic breaker
The boom and arm are built with wide cross sections and reinforced high-tensile steel plates, connected by extra‑large pins for long fatigue life in abrasive, high‐shock environments.
A hydraulic hammer (rockbreaker) is mounted at the arm tip, sized to break extremely hard and abrasive large rocks encountered in mining, quarrying, aggregate, cement, and metallurgical applications.
Electric-hydraulic power module
For fixed applications, high‑class powering modules with electric motor, hydraulic pump, tank, and built‑in filters supply oil to the boom functions and breaker.
Cooling and filtration are configured for continuous-duty cycles, supporting long intervals between services and stable performance under heavy impact loads.
Manual and remote steering systems
Standard equipment features manual steering using proportional valves mounted on or near the base, providing smooth, precise control of boom movements.
Optional remote steering—radio or wired—is available, with durable, lightweight controllers that allow the operator to work from a safe vantage point while retaining fine manoeuvring capability.
Example specification models such as WHC880 or WHC960 offer boom weights in the multi‑ton range and working radii exceeding 11 m horizontally and nearly 9 m vertically, illustrating the coverage achievable with YZH fixed rockbreaker booms.
Fixed rockbreaker booms are widely used wherever fixed breaking and raking duties are required:
Primary jaw and impact crushers in mines and large quarries, where a stationary boom with a smaller hydraulic hammer can break extremely hard and abrasive large rocks.
Grizzly rock booms mounted over fixed grizzly screens to knock down and break rocks that span bar gaps, maintaining open flow into the crusher.
Transfer points, ore passes, or secondary breaking stations in sand and gravel, cement, and metallurgical plants where oversized pieces cause regular build-ups.
In each scenario, the boom is oriented and sized so operators can reach all the usual hang-up locations without repositioning equipment or relying on manual tools.
Although this page highlights the “YZH Fixed Rockbreaker Boom” as a product, YZH delivers it as part of an engineered solution:
Application engineers review crusher type, grizzly or chute layout, rock size distribution, and production targets to select an appropriate boom series, breaker size, and power unit configuration.
Working envelope, mounting height, and rotation range are defined using plant drawings, so that the boom covers all critical blockage points with adequate clearance and safe stand‑off.
Structural, hydraulic, and electrical interfaces are detailed in advance, enabling clean integration into existing plant infrastructure and safety systems.
For sites aiming at higher automation, fixed rockbreaker booms can be combined with intelligent controls, cameras, and advanced remote systems, as referenced in YZH’s promotion of intelligent fixed rockbreaker solutions.
Designed specifically for mining and quarry secondary breaking duties, with structural features such as wide boom sections, extra‑large pins, and high-tensile steel plates.
Proven in global installations as part of YZH’s wider rockbreaker boom system portfolio, enhancing safety, productivity, and profitability of crushing operations.
Supported by a single specialist supplier for boom, breaker, power modules, and steering systems, simplifying procurement, maintenance, and future upgrades across multiple stations.
If oversized and bridged rocks are still forcing manual clearing or repeated stops at your primary crusher or grizzly, a YZH Fixed Rockbreaker Boom can turn that vulnerable point into a controlled, engineered breaking station.
Provide your crusher or grizzly layout, typical oversize profile, and target capacity, and YZH will propose a fixed rockbreaker boom configuration that delivers safe, efficient oversize control tailored to your site.
