Thruster brake is a device to retard the speed of moving machinery and to stop it accurately to the desired position. The braking force is applied to the brake shoe by a pre-stressed compression spring. The shoes press on the rotating brake drum retarding its speed and finally stopping it. The releasing of the brake and compressing of the spring is done by the Thruster. The thruster shoe brake has a pair of cast iron shoes which are lined up with friction pads. The shoes are hinged on the main arm and the side arm of the brake, each of them having a hinge pin fitted in the base.
They are connected to each other on top by a tie rod, which is hinge in the main arm and locked to the swivel block in the side arm, by a lock nut. A crank lever is hinged on the main arm, and the other end is fixed to the top clevis of the thruster by a hinge pin. A brake spring is fixed on the main arm and is pre-locked by a lock nut on the lever.
The pre tension in this spring decides the braking torque. The thruster is fitted on the base by a hinge pin. When the thruster is not energized, the brake shoes are pressed on the brake drum fitted on the drive motor shaft and hold it under the effect of braking force provided by the spring.
In such a condition, the brake is applied and the drum cannot rotate. When the thruster motor is energized, the thrust provided by the thruster lifts up the crank lever which moves the arms and the shoe brakes away from the brake drum, and releasing the braking force. The spring is compressed and braking energy is stored for the next cycle.
The related motor torque is given by:
T = OR
| Brake Type (MDT) | 100x18 | 160x18 | 200x18 | 200x34 | 250x18 | 250x34 | 300x18 | 300x34 | 300x46 | 400x34 | 400x46 | 400x68 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drum Dia. (mm) | 100 | 160 | 200 | 200 | 250 | 250 | 300 | 300 | 300 | 400 | 400 | 400 |
| Thruster Capacity (kg) | 18 | 18 | 18 | 34 | 18 | 34 | 18 | 34 | 46 | 34 | 46 | 68 |
| Stroke (mm) | 51 | 51 | 51 | 51 | 51 | 51 | 15 | 51 | 51 | 51 | 51 | 51 |
| Braking Torque (Kg-m) | 6 | 9 | 20 | 32 | 35 | 42 | 42 | 62 | 90 | 90 | 110 | 170 |
| Sr. No. | Product Name | Description | Part Number |
|---|---|---|---|
| 1 | MDT 100-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 100x18 with 18 kg thruster,HSN Code:84312010 | MDT 100-18 |
| 2 | MDT 150-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 150x18 with 18 kg thruster ,HSN Code:84312010 | MDT 150-18 |
| 3 | MDT 160-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 160x18 with 18 kg thruster,HSN Code:84312010 | MDT 160-18 |
| 4 | MDT 200-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 200x18 with 18 kg thruster,HSN Code:84312010 | MDT 200-18 |
| 5 | MDT 200-34 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 200x34 with 34 kg thruster,HSN Code:84312010 | MDT 200-34 |
| 6 | MDT 250-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 250x18 with 18 kg thruster,HSN Code:84312010 | MDT 250-18 |
| 7 | MDT 250-34 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 250x34 with 34 kg thruster,HSN Code:84312010 | MDT 250-34 |
| 8 | MDT 300-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 100x18 with 18 kg thruster,HSN Code:84312010 | MDT 300-18 |
| 9 | MDT 300-34 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 300x34 with 34 kg thruster,HSN Code:84312010 | MDT 300-34 |
| 10 | MDT 300-46 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 300x46 with 46 kg thruster,HSN Code:84312010 | MDT 300-46 |
| 11 | MDT 400-18 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 400x18 with 18 kg thruster,HSN Code:84312010 | MDT 400-18 |
| 12 | MDT 400-34 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 400x34 with 34 kg thruster,HSN Code:84312010 | MDT 400-34 |
| 13 | MDT 400-46 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 400x46 with 46 kg thruster,HSN Code:84312010 | MDT 400-46 |
| 14 | MDT 400-68 Thruster Brake | ELECTRO HYDRAULIC THRUSTER BRAKE/MILL DUTY BRAKE 400x68 with 68 kg thruster,HSN Code:84312010 | MDT 400-68 |
An asbestos brake pads are used on the steel brake shoes to absorb the heat generated due to the friction of the shaft with the linings.The asbestos brake linings are riveted to the brake shoes and get worn off over time.
Key Features of Electrohydraulic Thruster Brakes
Electrohydraulic thruster brakes are available in a wide range of thrust capacities, making them suitable for various types of EOT cranes. Whether you are operating a mini EOT crane or a heavy-duty industrial crane, there is a brake specifically designed to match your requirements. The thruster capacity determines the maximum braking force the brake can generate, ensuring safety during crane operation.
Different EOT cranes have varying drum diameters, and selecting the appropriate brake ensures optimal performance. Electrohydraulic thruster brakes come in an array of sizes to accommodate different drum diameters accurately. This compatibility guarantees efficient braking action and prevents slippage, increasing the overall reliability of the system.
Safety is paramount in any crane operation, and electrohydraulic thruster brakes excel in this area. These brakes provide precise control over the braking action, ensuring smooth and accurate stops without any overrun. This precision not only enhances worker safety but also prevents potential damage to goods and equipment being lifted, lowering the risk of accidents and costly downtime.
Electrohydraulic thruster brakes for EOT cranes are fabricated using high-quality materials that undergo rigorous testing to meet industry standards. State-of-the-art manufacturing processes and stringent quality control measures play a crucial role in ensuring the reliability and durability of these brakes. With their robust construction, electrohydraulic thruster brakes can withstand the harsh operating conditions typically experienced in heavy-duty industries.
The thruster applies hydraulic pressure to the brake shoe assembly, generating friction against the braking surface, resulting in the desired braking force.
Crucial factors to consider include thrust capacity, drum diameter compatibility, and the specific requirements of the EOT crane.
Precision braking prevents overrun and ensures accurate stops, minimizing the risk of accidents and damage to goods and equipment.
Electrohydraulic thruster brakes for EOT cranes have revolutionized braking technology, introducing precise control and enhanced safety to crane operations. With their various thrust capacities and drum diameter options, these brakes can be tailored to suit the needs of any EOT crane, offering optimal performance and increased efficiency.
Their robust fabrication techniques and impeccable reliability make them an ideal choice for heavy-duty industries. By maximizing safety, accuracy, and control, electrohydraulic thruster brakes pave the way for seamless crane operations, ensuring the smooth movement of loads and promoting productivity across various sectors.