Product Image
Product IntroductionThe disc brake is a new high-performance brake and represents the development direction of modern mechanical brakes. It uses a rear-mounted dual-circuit hydraulic cylinder design, offering low inertia, fast response, good adjustability, high reliability, strong versatility, simple foundation, and easy maintenance.
Disc brakes can be used in mine hoists, belt conveyors, aerial ropeways, ship lifts, and other machinery. On mine hoists, they serve as both working brakes and emergency brakes, driven and controlled by a separate hydraulic station. The braking torque is generated axially by brake shoes pressing from both sides onto the brake disc. To prevent additional deformation of the brake disc and axial load on the main shaft, brakes are installed in pairs, with each pair constituting one disc brake unit. Multiple units can be installed per hoist depending on the required braking torque.
The disc brake generates braking force via disc springs and releases the brake using hydraulic pressure. During braking, the normal force of the brake shoes on the disc is determined by the hydraulic pressure in the cylinder.
The new disc brake, combined with the hydraulic station, forms the braking system of a mine hoist. Pipelines use ferrule-type joints, and the cylinder, piston, and seals are optimized based on foreign designs. The piston uses low-temperature carbon-ammonia diffusion (QPQ) treatment to enhance wear resistance and ensure zero leakage, providing reliable working and safety braking for the hoist.
Technical Specifications| Disc Brake Parameter Table | |||||
| Disc Brake Type | Maximum Pressure of a Single Brake Unit | Friction Coefficient (Brake Shoe Design) | Brake Shoe Allowance | Disc Spring Specification | Brake Shoe Dimensions |
| KN | f | ℃ | Outer Diameter×Thickness | Length×Width×Thickness（mm） | |
| TP-4.0T | 40 | 0.4 | ≤80 | φ100*8 .2 | 280×185×20 |
| TP-6.3T | 63 | φ140*11 .2 | 320×238×27 | ||
ApplicationThe disc brake is a key actuator in the hoist braking system, forming a complete braking system together with the hydraulic station and pipeline system. It is used for both working braking and safety braking of the hoist.
The disc brake generates braking force through disc springs and releases the brake using hydraulic pressure, with the braking force acting axially. The magnitude of braking force, maintenance, and adjustment significantly affect the safe operation of the entire hoist system. Installation and operating units must pay close attention to ensure operational safety.
Performance Features:
Braking torque is highly adjustable.
Low inertia, fast action, and high sensitivity.
High reliability: multiple brakes (typically 2–12) can work simultaneously. If one fails, only a small portion of braking force is lost, and the hoist can generally still be stopped. In case of hydraulic station or system failure, braking is automatically applied.
Good versatility: many parts are interchangeable, and the same model of disc brakes can be used on different hoists in varying quantities. Simple structure, easy maintenance, and adjustment.
1. The piston and brake shoes of the disc brake should operate simultaneously under the design hydraulic pressure, without crawling or sticking.
2. Under no-load conditions, the minimum operating pressure of the disc brake piston should not exceed 0.3 MPa.
3. Under the design hydraulic pressure, the stroke of the disc brake shoes should not differ from the design stroke by more than 10%.
4. When maintained at 1.25 times the design pressure for 10 minutes, no oil leakage should appear at any seal.
5. The disc brake should be equipped with a brake shoe over-wear protection device and a spring fatigue warning device.
6. The disc brake should be fitted with an air release device.
To meet the requirements of various series of mine hoists, disc brakes are available in different specifications.
Product Details
