Exd I/IIB Dual Grade BYT1 Flameproof Pusher, High-Frequency Stable For Underground Mining Equipment

 

 

Core Competitive Advantages

National standard certified dual-grade explosion-proof design (Core Highlight)

Adopt thickened cast iron  flameproof enclosure, fully isolate internal motor sparks, electric arcs and high-temperature components from external flammable methane, coal dust and chemical vapors to eliminate explosion hazards. Two explosion-proof grades for one series: Exd I Mb dedicated for underground coal mine non-excavation areas; Exd IIB T4 suitable for petrochemical, paint, fertilizer and other flammable gas workshops, one model covers all hazardous zone demands, complete official explosion-proof certification documents for factory safety inspection filing.

Fully interchangeable with standard YT1, low-cost hazardous equipment renovation

Mounting hole dimensions, thrust and stroke parameters consistent with ordinary YT1 non-flameproof thrusters, no modification to brake brackets or crane undercarriage during equipment upgrade, only replace the thruster unit to realize full explosion-proof safety transformation, greatly cut old hazardous workshop renovation engineering cost and construction cycle.

Built-in passive fail-safe spring safety protection

High-strength alloy return spring installed inside cylinder body; in case of power outage, circuit short circuit or hydraulic system failure, push rod retracts instantly to clamp explosion-proof brake drum, prevent mine hoist load falling, underground conveyor material reverse sliding and explosion-proof crane trolley drifting, meet mandatory safety standards for hazardous lifting machinery.

High-frequency continuous operation stable performance

Optimized hydraulic circulation system supports up to 720 working cycles per hour long-time frequent start-stop, B-class flameproof motor with excellent heat dissipation, no thrust attenuation or motor overheating failure under 24h continuous mine production line operation. ZC cushioned retraction type adds internal buffer spring to eliminate rigid impact during push rod reset, reduce friction lining wear and equipment vibration, extend whole brake service life by 30%.

IP54 all-sealed anti-dust anti-moisture harsh environment adaption

Whole flameproof motor housing IP54 fully sealed, special waterproof flameproof cable gland prevents underground mine water vapor, coal dust and chemical corrosive gas invading internal electrical components, avoid short-circuit and flameproof failure caused by dust accumulation, long-term stable operation in high-dust, high-humidity underground mine environment.

Ultra-low maintenance modular construction

Hard chrome plating push rod + double composite sealing ring effectively prevent hydraulic oil leakage, reduce regular oil change and seal replacement frequency;

All internal moving parts self-lubricated by circulating hydraulic oil, cancel manual regular greasing maintenance work for mine workers;

Split detachable cylinder body design, quick disassembly for oil change and component inspection without removing the whole thruster from brake frame;

Complete full range models BYT1-18Z/2 ~ BYT1-320Z/12 covering small to super large thrust stroke, standard universal spare parts reduce hazardous factory inventory pressure.

Diversified customized configurations

Special mining AC660V high-voltage flameproof motor optional for underground coal mine power grid; upper/lower travel limit switches can be equipped to feed brake open/closed signals to PLC for full safety interlock control; customized anti-corrosion coating for chemical plant corrosive gas environment, vertical standard mounting bracket as default.

Main Application Scenarios

Coal mining industry: Underground mine belt conveyors, mining explosion-proof hoists, underground rail transfer trolleys, coal stockyard tripper cars

Petrochemical & chemical: Oil refinery cranes, chemical plant explosion-proof overhead cranes, flammable material pipeline switching valves

Hazardous metallurgy: Furnace flammable gas workshop explosion-proof lifting equipment, combustible dust raw material transport machineryMatching braking equipment: BYWZ series explosion-proof electro-hydraulic drum brakes

Working Condition Parameters

• Executive standard: GB3836.1-2010, GB3836.2-2010, JB/T10603-2006
• Explosion-proof grade: Exd I Mb (coal mine), Exd IIB T4 (chemical industry)
• Protection grade: IP54, motor insulation class B
• Max operating frequency: 720 cycles/hour
• Structure type: Z standard / ZB lengthened stroke / ZC cushioned retraction
• Standard voltage: AC380V, mining special AC660V customizable
• Ambient adaption: -20℃ ~ +40℃, underground high-dust high-humidity, flammable gas/dust hazardous workshop
• Core function: Drive explosion-proof drum brakes, hazardous zone valve/lever linear actuating device

 

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