💡 Key Features & Characteristics
Explosion-Protected Design:
Flameproof Enclosure: The entire unit is housed in a robust, sealed explosion-proof casing. It is engineered to contain any internal explosion and prevent it from igniting the surrounding hazardous atmosphere.
Safety Certification: Complies with strict national and international standards for explosive atmospheres. It typically carries certifications such as Exd I Mb (for underground coal mines) or Exd IIB T4 (for industrial gas atmospheres), along with the "MA" (Mining Products Safety Approval) mark for use in mining environments.
High-Performance Specifications (BEd301/6):
Rated Thrust: Delivers a massive and consistent thrust force of 30,100 N.
Rated Stroke: Provides a lifting travel of 60 mm.
Power Supply: Operates on standard industrial 3-phase AC power. It supports various voltages such as 380V, 660V, or 1140V at 50Hz, with allowed voltage fluctuations typically ranging from +10% to -25%.
Operating Frequency: Capable of high-frequency operations (often up to 600+ cycles per hour), making it ideal for frequent start-stop braking applications in heavy industry.
Robust & Reliable Operation:
Electro-Hydraulic Actuation: When powered on, the built-in motor drives a centrifugal pump impeller to generate hydraulic pressure. This forces oil to push the piston and pushrod rapidly upward to release a brake. When powered off, the piston quickly returns to its original position via an external load spring or gravity, ensuring a fail-safe braking action.
Wide Temperature Range: Designed to operate reliably in harsh ambient temperatures ranging from -20°C to +40°C (some variants support up to +50°C).
High Protection Rating: Features excellent sealing to achieve a high IP rating (typically IP55 or IP65), effectively protecting against dust, moisture, and corrosion.
Durable Construction: The motor typically features Class F insulation for excellent thermal stability. The pushrod and motor shaft are often surface-hardened with hard chrome plating to reduce wear and extend seal life.
Flexible Installation:
Multi-Position Mounting: Thanks to a built-in balancing air chamber in the cylinder housing, the BEd301/6 can be installed at virtually any angle from 0 to 180 degrees (vertical, horizontal, or intermediate positions).
Note: Regardless of the installation position, the pushrod itself must not bear any external radial or side loads to ensure optimal performance and longevity.
🏭 Typical Applications
The BEd301/6 is a critical safety component in industries with high explosion risks and heavy-load requirements:
Mining & Coal Processing: Widely used in underground coal mines to actuate heavy-duty brakes on belt conveyors, mine hoists, and winding engines where methane gas (firedamp) and coal dust are present.
Oil & Gas / Petrochemical: Ideal for operating large industrial valves, emergency shutdown systems, and braking mechanisms in refineries, chemical plants, and offshore platforms containing flammable vapors.
Metallurgy & Heavy Industry: Applied in steel mills and foundries where industrial gases or combustible dust create hazardous working environments requiring massive braking torque.
📋 General Technical Specifications
表格
| Parameter | Description |
|---|---|
| Type | Explosion-Protected Electro-Hydraulic Thruster |
| Model Series | BEd Series |
| Model Variant | BEd301/6 |
| Rated Thrust | 30,100 N |
| Rated Stroke | 60 mm |
| Explosion-proof Mark | Exd I Mb / Exd IIB T4 (Typical) |
| Power Supply | 3-phase AC 380V/660V/1140V / 50Hz |
| Ambient Temperature | -20°C to +40°C |
| Key Features | Flameproof housing, mining certified (MA), massive thrust force |
Note: The BEd301/6 is a highly specialized safety device. Before installation, it is crucial to verify the exact voltage configuration and specific explosion-proof certification against the manufacturer's nameplate to ensure it matches your site's hazardous area classification. Regular visual inspections of the flameproof enclosure, cable glands, and external seals are essential to maintain its safety integrity in hazardous locations.
