Martel Self-Advancing Tail

Construction

Modular construction for confined spaces

The Martel self-advancing tail uses a modular split architecture: the frame, self-moving carriage and advance mechanism can be disassembled and assembled separately. This simplifies underground transport and installation — especially where the tunnel entry space is limited.

Symmetric travel rails on both sides, together with the self-moving carriage and several sets of support cylinders plus a push cylinder, produce a smooth stepping motion of the frame. Without frequent dismantling of the anchored holding system, the tail works in synchronisation with the roadheader second conveyor.

Frame, carriage and advance mechanism disassemble and assemble separately
Symmetric travel rails on both sides
Several sets of support cylinders plus a push cylinder
Smooth stepping motion without frequent dismantling of anchors
Synchronised work with the roadheader second conveyor
Dedicated hydraulic lock on every actuator cylinder

Martel self-advancing tail — construction diagram

Efficiency

Over 30% more efficient coordination

The modular construction and the elimination of frequent anchor dismantling cut the auxiliary time spent moving equipment.

Where the gain comes from

No need to dismantle the anchored holding system frequently
Direct synchronised advance with the roadheader second conveyor
Rapid assembly and disassembly of modules for underground transport
Built-in hydraulic locks — fewer stops for re-adjustment

The "over 30%" figure is as stated by the manufacturer. Actual improvement depends on site conditions, cycle time and work organisation.

Integrated design features

Standardised frame-side interfaces for the pump station carriage
Mounting position for the cable reel carriage
Rack for storing and routing hydraulic lines
Removable bottom coal plate to clean rails and frame
Abrasion-resistant hydraulic lines in protective sleeves

Hydraulics & safety

Hydraulic control and safety

High-pressure emulsion, 4+2 six-way valve and a dedicated hydraulic lock on every cylinder.

Supply

The working medium is high-pressure emulsion from the working face — the standard source available at a coal mine.

4+2 valve

The six-section valve controls the carriage, the travel rails and the slide blocks.

Hydraulic locks

Every actuator cylinder has a dedicated hydraulic lock — reliable hold in any position.

Fail-safe

On sudden loss of supply or a pressure surge the frame cannot shift by itself.

On documentation. Technical specifications, drawings, installation and operating manuals are available on request. Approval and certification requirements depend on the country and project — we can provide the relevant technical files and assist with compliance against your requirements.

Technical specifications