The 等D-A series safety brake is a high-power braking device used on low-speed shafts (drum shafts), which can be widely used for emergency safety braking of low-speed shafts in large and medium-sized cranes, port loading and unloading machinery, and boom lifting mechanisms. The working braking and emergency safety braking of mining winches, hoists, and high-power inclined belt conveyors, the safety braking of the driving mechanism of cable cars and cable cranes, and the safety (emergency) braking of the low-speed shaft of the lifting mechanism of special cranes such as casting cranes
The main characteristics of 等D-A series safety brakes are: 1. Normally closed design with good performance; Make a disc spring to apply force and brake, hydraulic drive to release (see hydraulic station sample for hydraulic station selection)2. The action is sensitive and the closing (closing) time is short3. Optional switches such as opening limit, pad wear, and excellent limit can be equipped for signal display or interlocking protection4. Stable performance with asbestos free hard friction lining, stable friction coefficient, no damage to brake discs, and insensitive to water medium and salt spray (seawater)5. Reasonable sealing structure design and procurement of sealing components. Good effect and long lifespan6. The installation position is flexible and easy to use, adjust, and maintain
Application:
Compared with drum brakes, 等D-A series safety brakes have advantages such as compact structure, large braking torque, and easy installation. They are mainly used for mechanical braking or deceleration in various industries such as lifting, transportation, metallurgy, mining, ports, construction machinery, cables, suspension equipment, wind turbines, textile machinery, etc
Usage conditions
1. Environmental temperature: -20 ℃~+50 ℃
2. Air relative humidity ≤ 90%3. There must be no flammable or explosive gases in the surrounding working environment4. The altitude of the usage site complies with GB755-20005. Outdoor rain and snow erosion or corrosive gases and media should use anti-corrosion products
Main features
1. Compact structure and large braking torque
2. Equipped with automatic compensation device, with short response time3. Can be used for work braking and safety braking4. Work braking, allowing high-frequency braking5. The normally closed design is safe and reliable
Work brake
1. It can be equipped with an opening limit switch and a switch with excellent pad wear, which can provide interlocking protection and fault display;
2. High braking torque, low maintenance cost, equipped with automatic compensation device for pad wear (stable braking torque), and short response time3. Large installation tolerance, brake disc end face runout: value ± 0.22MM, and verticality deviation of the base relative to the brake disc: value ± 4 ‰4. Deviation value of the brake disc relative to the center of the base: value ± 2.5mm
Safety brake
1. High braking torque, low maintenance cost, equipped with automatic compensation device for pad wear (stable braking torque), and short response time
2. Large installation tolerance, brake disc end face runout: value ± 0.2MM, and verticality deviation of the base relative to the brake disc: value ± 0.4 ‰Note: D is only suitable for use as a safety brake, and can also be used as a working brake when the frequency of use is very low
