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SBD-A-1600*30IRL Safety Brake
SBD-A-1600*30IRL Safety brake The SBD-A-1600×30IRL is a heavy-duty industrial safety brake engineered for critical stopping, load-holding, and emergency protection of large rotating machinery-including mine hoists, heavy-duty conveyors, port gantry cranes, and metallurgical equipment....
Description
SBD-A-1600*30IRL Safety brake
The SBD-A-1600×30IRL is a heavy-duty industrial safety brake engineered for critical stopping, load-holding, and emergency protection of large rotating machinery-including mine hoists, heavy-duty conveyors, port gantry cranes, and metallurgical equipment. Classified as a fail-safe, spring-engaged, hydraulic-released brake, it combines reliable emergency response, stable braking performance, and harsh-environment adaptability to prevent machinery runaway in high-risk operations. The model designation (SBD-A-1600×30IRL) indicates its core parameters: "SBD" for Safety Brake Design, "A" for Standard Series, "1600" for compatible brake disc diameter (1600 mm), "30" for disc thickness (30 mm), "I" for Integrated Actuation, and "RL" for Right-Left dual-mounting compatibility. Widely used in mining, ports, and steel production, it ensures operational safety under heavy loads (300–1500 tons) and extreme working conditions.
Products Description
1. Model Interpretation & Core Function
The SBD-A-1600×30IRL's model code directly reflects its design parameters and functional orientation, facilitating quick equipment matching:
| Model Segment | Meaning |
|---|---|
| SBD | Safety Brake Design (fail-safe, spring-engaged type) |
| A | Standard Series (optimized for general heavy-duty industrial applications) |
| 1600 | Compatible brake disc diameter: 1600 mm (balanced torque and disc wear) |
| 30 | Compatible brake disc thickness: 30 mm (high-strength, wear-resistant) |
| I | Integrated Actuation (hydraulic cylinder and caliper integrated design) |
| RL | Mounting orientation: Right-Left dual-compatible (flexible installation) |
Its core functions are tailored to safety-critical scenarios:
Emergency Stopping: Rapidly decelerating or stopping machinery within ≤ 0.5 seconds under rated load (e.g., hoist overspeed, conveyor blockage).
Static Load Holding: Securing heavy loads (e.g., lifted ore, containers) in place during downtime, maintenance, or power outages-preventing accidental movement.
Overload & Fault Protection: Automatically engaging in power loss, hydraulic system leakage, or overspeed (detected by sensors), acting as a final safety barrier to avoid equipment damage or accidents.
2. Working Principle
The SBD-A-1600×30IRL operates on a fail-safe principle (spring-engaged, hydraulic-released), ensuring braking capability even if the actuation system fails. Its working cycle includes three key states:
2.1 1. Brake Engagement (Safety State)
When the machinery is stationary, in emergency, or powered off, internal high-tension disc springs (60Si2MnA alloy steel) expand.
The springs push the integrated dual-sided calipers toward the rotating brake disc, clamping the disc between high-performance friction pads.
Friction between the pads and disc generates stable braking torque (nominal: 160–200 kN·m, model-dependent), stopping the disc or holding it stationary.
2.2 2. Brake Release (Operating State)
When the machinery needs to run, the control system supplies hydraulic pressure (12–20 MPa) to the integrated hydraulic cylinders on the calipers.
Hydraulic force overcomes the disc spring tension, pulling the calipers away from the brake disc and creating a 0.3–0.8 mm clearance.
The brake disc rotates freely with the machinery shaft, enabling normal operation (e.g., hoisting, conveying).
2.3 3. Emergency Response (Fault State)
In case of power loss, hydraulic leakage, or abnormal speed, the actuation force dissipates instantly.
Disc springs expand within ≤ 0.3 seconds, driving the calipers to clamp the disc-generating peak braking torque to stop the machinery immediately.
3. Core Structure & Key Components
The SBD-A-1600×30IRL features a robust, integrated design with four critical subsystems, optimized for durability and easy maintenance:
3.1 1. Integrated Caliper & Actuation Unit (Core Assembly)
Dual-Sided Calipers: Cast steel (QT500-7) calipers with integrated hydraulic cylinders (4–6 cylinders per brake), reducing external pipelines and leakage risks.
High-Performance Friction Pads: Ceramic-metallic composite pads with a friction coefficient (μ ≥ 0.42) and heat resistance up to 550°C. Pads are bolted for quick replacement (≤ 20 minutes per set).
Automatic Wear Adjuster: A mechanical adjuster that compensates for pad wear (up to 12 mm), maintaining consistent brake clearance without manual calibration.
3.2 2. Disc Spring Mechanism (Safety Core)
Disc Spring Stack: High-strength 60Si2MnA disc springs arranged in parallel to provide stable clamping force (60–100 kN total). The stack is replaceable as a unit for easy maintenance.
Spring Guide Sleeve: A steel sleeve that ensures uniform spring expansion/contraction, avoiding jamming and ensuring reliable engagement.
3.3 3. Safety & Sensing System (Control Core)
Limit Switches: Two position sensors (one for "fully engaged," one for "fully released") that send signals to the machinery's PLC. This 实现 interlock control (machinery starts only when brake is released).
Wear Sensors: Optional inductive sensors that detect pad wear (≤ 3 mm remaining) and trigger maintenance alerts, reducing unplanned downtime.
Pressure Sensors: Monitor hydraulic system pressure, triggering emergency engagement if pressure drops below the safe threshold.
3.4 4. Mounting & Protection Components (Durability Core)
Adjustable Mounting Brackets: Steel brackets with ±8 mm horizontal/vertical adjustment, simplifying alignment with the brake disc during installation.
Environmental Protection Cover: IP65-rated steel cover that shields internal components from dust, water splashes, and mechanical impact-suitable for outdoor (ports) and indoor (steel mills) use.
Anti-Corrosion Coating: Epoxy resin coating (80–100 μm) on calipers and brackets, resisting mine water, salt spray, and industrial dust.
4. Key Features & Advantages
The SBD-A-1600×30IRL stands out for its safety, integration, and adaptability, with core benefits:
4.1 1. Fail-Safe Reliability
Spring-engaged design ensures automatic braking in power/hydraulic failure, eliminating machinery runaway risks-critical for mine hoists and cranes.
4.2 2. Integrated Design & Low Leakage
Integrated caliper and hydraulic cylinders reduce external pipelines by 70%, minimizing oil leakage and improving system stability in harsh environments.
4.3 3. Stable Braking Performance
Large brake disc (1600 mm diameter) and dual-sided clamping ensure even force distribution, avoiding disc warping and maintaining consistent torque (±3% of nominal value).
4.4 4. Harsh-Environment Adaptability
Operates in temperatures from -25°C to 110°C and resists dust, humidity (≤ 95%), and salt spray.
IP65 protection and anti-corrosion coating ensure reliable performance in mines, ports, and steel mills.
4.5 5. Easy Maintenance & Long Service Life
Replaceable modular components (pads, spring stacks) reduce maintenance time and costs.
Friction pads have a service life of ≥ 15,000 working hours; disc springs and seals last ≥ 8 years under normal operation.
5. Typical Applications
The SBD-A-1600×30IRL is purpose-built for heavy-duty, safety-critical machinery across industries:
Mining Industry: Emergency brakes for mine hoists (underground/above-ground) and long-distance belt conveyors-withstanding dusty, humid environments.
Port Machinery: Safety brakes for rail-mounted gantry cranes (RMGs) and container hoists-providing stable braking for heavy container loads (20–60 tons).
Metallurgical Industry: Brakes for steel mill rolling mill drives and ladle transfer cars-withstanding high temperatures and ensuring precise positioning.
Heavy-Duty Conveyors: Safety brakes for bulk material conveyors (cement, limestone) in power plants and quarries-stopping quickly during blockages.
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