Tracked mobile jaw crusher structural characteristics

Tracked mobile jaw crusher structural characteristics

Tracked mobile jaw crusher is a self-propelled integrated crushing equipment taking jaw crusher as main host. Different from wheeled portable crushing plants relying on external traction, it adopts hydraulic crawler traveling chassis. The whole machine integrates feeding, crushing, conveying, power, hydraulic drive and intelligent control modules. It can independently walk, turn and shift positions on complex terrain such as mines, mountain slopes and muddy sites. This article systematically sorts out its overall layout and unique structural characteristics of each module.

1. Overall Layout Feature

Modular integrated compact layout, all units are installed on one crawler main frame.

  1. Front section: Vibrating feeder with grizzly pre-screening function
  2. Middle core section: Jaw crusher main unit (PE / PEV / PEW series)
  3. Rear section: Foldable discharging belt conveyor
  4. Bottom: Heavy-duty crawler traveling chassis
  5. Side layout: Power system, hydraulic station, PLC electric control cabinet, maintenance platform, dust suppression device Characteristic advantage: Pre-assembled in factory, no civil foundation required. After arriving at the site, simple inspection enables direct startup and production.

2. Crawler Travel Chassis — Most Distinctive Structural Feature

This is the biggest difference from wheel mobile jaw crusher.

Structural composition

Track shoe, track frame, driving wheel, tension wheel, supporting roller, carrier roller, hydraulic travel motor, reduction gearbox, tension hydraulic cylinder.

Core structural characteristics

  1. Hydraulic independent drive: Two crawler sides are equipped with separate hydraulic motors, realizing in-situ steering, differential steering, forward, backward and low-speed climbing.
  2. Strong terrain adaptability: Wide steel track shoes increase ground contact area, lower ground specific pressure. It can pass muddy roads, uneven mountain terrain and temporary unhardened mining sites without pavement.
  3. Heavy load-resistant welded track frame: High-strength thick steel plate welding, withstand vibration impact generated during crushing operation.
  4. Hydraulic automatic tension structure: Prevent track chain falling off caused by vibration and impact.

Limitation characteristic

The crawler chassis will wear track shoes when traveling on hard rock ground; long-distance highway transportation needs flatbed truck shipment, cannot travel on public roads by itself.

3. Crushing Host Module Structural Characteristics

Most equipped with single-toggle heavy-duty jaw crusher (PEV European jaw or classic PE coarse jaw) as standard configuration.

  1. Reinforced vibration-damping connection: Elastic rubber buffer pads are installed between jaw crusher base and main chassis frame. Isolate crushing vibration from being directly transmitted to crawler frame and walking system, protect hydraulic components.
  2. Compact optimized host layout: Adjust frame angle to match feeding height of front feeder, reduce material falling height and lower stone splashing risk.
  3. Reserved sufficient maintenance space: Side maintenance platform, convenient for replacement of jaw plate, toggle plate, bearing bush and other wearing parts.
  4. Standard overload protection structure: Toggle plate safety protection, matched with on-board hydraulic system, some models support hydraulic automatic cavity clearing after metal block jamming.

4. Vibrating Feeder Pre-screening Integrated Structure

Installed at the feeding inlet of jaw crusher.

  1. Combined grizzly bar screening structure: Realize pre-screening. Soil, fine sundries bypass the jaw crusher and fall directly onto the lower conveyor, improve overall output and reduce cavity blockage probability.
  2. Buffer silo design at feeding end: Reduce impact force when excavator loads materials.
  3. Feeder is fixed on the front of main frame with vibration isolation supports to avoid resonance with the whole machine.

5. On-board Belt Conveyor Structural Characteristics

  1. Foldable hydraulic lifting structure: The discharging conveyor can be lifted and folded by hydraulic cylinder during long-distance transportation, reduce overall height, meet container and flatbed transport limit requirements.
  2. Adjustable discharge height: Convenient for stacking materials or docking with the next mobile crushing screening unit.
  3. Equipped with belt deviation correction device, anti-skid roller, material baffle and skirt rubber to prevent material scattering.
  4. Optional magnetic separator installation support: Remove steel bar, iron blocks mixed in construction waste or mine ore before discharging.

6. Power & Hydraulic System Structural Characteristics

Two mainstream structural configurations:

Type 1: Diesel-generator integrated self-power structure

  • On-board diesel engine drives generator, supply power for feeder, crusher and conveyor.
  • Independent hydraulic station provides pressure oil for crawler walking, conveyor lifting, hydraulic adjustment of discharge opening. Suitable for remote mining sites without industrial power supply.

Type 2: External grid electric drive + auxiliary hydraulic station

  • Main equipment driven by external 380V industrial electricity, lower operation noise and fuel cost.
  • Independent hydraulic system only serves crawler traveling and auxiliary actions.

Shared structural features:

  1. Centralized hydraulic oil circuit layout, integrated valve group, fewer exposed pipelines, reduce damage caused by stone impact.
  2. Independent oil cooling radiator, adapt to continuous high-load operation in high-temperature open-air mines.
  3. Oil tank equipped with filter and liquid level temperature monitoring sensor.

7. Electric Control & Intelligent Monitoring Structural Characteristics

  1. Centralized PLC integrated control cabinet, centralized operation for all equipment. Support one-key startup/shutdown of the whole production flow (feeder → crusher → conveyor).
  2. Interlocking protection program: If the crusher jams or stops abnormally, the vibrating feeder automatically stops feeding to avoid material blocking inside the crushing cavity.
  3. Optional remote monitoring module: Real-time view equipment current, bearing temperature, hydraulic oil pressure, running fault codes.
  4. Equipped with emergency stop buttons on multiple positions (operation cabinet, machine side) for safety protection.

8. Auxiliary Environmental Protection & Safety Structure Characteristics

  1. Reserved mounting interface for spray dust suppression system, reduce flying dust during crushing.
  2. Full surrounding anti-splash guard plates around feeding port and crushing cavity.
  3. Integrated safety guardrails and anti-slip maintenance platform.
  4. Noise reduction shell for diesel engine configuration to lower operation noise.

9. Summary of Core Structural Feature Highlights

  1. Hydraulic crawler self-propelled chassis is the core symbol, realizing free movement on complex rugged terrain;
  2. Elastic vibration isolation connection between all modules, effectively isolate strong crushing vibration and protect walking and hydraulic parts;
  3. Highly integrated modular design, feeding-crushing-conveying-walking united as one unit, no foundation construction needed;
  4. Equipped with pre-screening feeder to remove fine materials in advance and reduce crusher load;
  5. Foldable hydraulic conveyor, convenient for overall hoisting and flatbed transportation;
  6. Interlocking intelligent electric control system, effectively reduce equipment jamming faults caused by misoperation.