BB600
YZH
Product Description
Jaw and impact crushers are most efficient when they receive a consistent feed of rock that fits within the design opening; oversized boulders and slabs disrupt that balance and can bring production to a standstill. This rock breaker boom system is installed right at the inlet of the jaw or impact crusher, so when a large or stubborn piece appears, the operator swings the boom into position, breaks the rock to the correct size and rakes loose material into the chamber without stopping the entire plant.
Instead of relying on excavators leaning over hoppers or crew with bars, the crusher has its own permanent “tool arm” at the feed mouth, designed specifically for safe, rapid oversize management.
Oversize and bridged rock at the crusher opening
Oversized boulders, elongated slabs or hard inclusions tend to lodge in the jaw or impact crusher inlet, leading to bridging, incomplete crushing and emergency stops.
The boom system lets the operator break these pieces in place and push fragments into the chamber so the crusher can keep working near its design capacity.
Uneven feed and repeated choke cycles
Irregular feed from blockages causes jaw and impact crushers to cycle between choke and starve conditions, increasing wear and reducing product quality.
By clearing problem material early, the boom helps maintain a more even feed profile, which keeps power draw and product gradation more stable.
Safety risks from manual clearing and mobile equipment
Breaking rock by hand or with excavators close to the crusher opening exposes personnel and machines to flyrock, falls and unstable piles.
With a pedestal-mounted boom and breaker controlled from a cabin or remote console, operators remain outside the danger zone while still having precise control over impact and movement.
Although tailored per site, this rock breaker boom system typically includes these core elements:
Pedestal boom and mounting structure
A heavy-duty boom is mounted on a fixed pedestal or swing post near the crusher feed opening, anchored to concrete or structural steel for stability.
Depending on layout, the system may use a swing-post design (around 170° swivel) or a turntable/slew-bearing design (up to about 330° swing), ensuring coverage across the full width of the crusher inlet and adjacent rock pile.
Hydraulic breaker (rock hammer)
The breaker is chosen to match the crusher duty: lighter, fast-acting hammers are used on jaw and impact crushers to break extremely hard and abrasive large rocks without overloading the boom or foundation.
The breaker and tool configuration are selected to deliver effective blows while minimizing accidental contact with crusher cheek plates, aprons or feed hoppers.
Hydraulic power unit (HPU)
An electric-driven hydraulic power unit supplies the flows and pressures required for both boom motion and hammer impact, with filtration and cooling sized for multi‑shift operation.
High-performance hydraulic circuits following industry standards (such as ISO 4413) help ensure reliability in dust and vibration-heavy environments.
Control and safety interface
Controls can range from simple valve-based systems to non‑programmable PLC or fully programmable “smart” controls, with joysticks and panel interfaces for smooth boom and hammer operation.
Remote operation options allow the rock breaker to be run from a control cabin or safe platform, and integration with plant interlocks and e‑stops ensures that boom operation is coordinated with crusher and conveyor safety logic.
This rock breaker boom system is optimized for:
Primary jaw crushers in quarries and mines
Installed at the jaw crusher feed to deal with irregular blocks and large boulders, ensuring that only suitably sized material enters the crushing chamber.
Primary and secondary impact crushers
Mounted at impact crusher inlets where slabby or reinforced pieces can cause bridging or damage if not broken down before contact with the rotor and aprons.
Grizzly or pre-screen in front of jaw/impact crushers
Positioned so the boom can also reach oversize on the grizzly or pre-screen, breaking and pushing it into the crusher or onto a bypass route as required.
In all cases, the boom geometry is chosen so that one system can cover the full crusher inlet and associated pre-screen area without needing to reposition the crusher or structure.
While this product is described as a “rock breaker boom system for jaw crusher and impact crusher,” each installation is engineered around the actual crusher layout:
Engineers evaluate crusher type, feed opening, inclination, pre-screen or grizzly arrangement, and rock size distribution to specify boom length, swing radius and breaker size.
Foundation and mounting details (swing post vs. turntable, pedestal height, slew range) are defined to ensure the boom can safely reach every likely hang‑up point with enough clearance and correct impact angle.
Controls and integration options are chosen to fit site standards—from stand‑alone local control to full integration with plant PLC and remote operation strategies.
This approach ensures the boom system is not a generic add‑on, but a dedicated oversize‑control station designed to complement each jaw or impact crusher.
They significantly enhance crusher efficiency by ensuring only appropriately sized material enters the chamber, reducing wear and spreading loads more evenly over time.
They minimize downtime and production disruptions by clearing blockages rapidly, often without shutting down the entire plant.
They improve safety and compliance by mechanizing oversize handling and allowing remote operation away from high‑risk areas.
If your jaw or impact crusher is frequently limited by oversized or bridged rock at the inlet, a rock breaker boom system mounted at the crusher feed can turn that bottleneck into a controlled, remote‑operated station.
Share your crusher type, feed opening, pre-screen or grizzly layout, and typical oversize profile, and YZH can configure a rock breaker boom system that matches your plant layout and desired performance targets.
