Gear couplings are important connecting components in mechanical transmission systems. They transmit torque between two shafts through gear meshing and compensate for axial, radial, and angular displacements caused by installation errors or operational deformation. Among them, the barrel-shaped gear coupling (such as the GIICL type) features an internal and external gear design with a barrel shape. Compared to traditional straight-tooth couplings, it offers better angular displacement compensation, effectively reduces edge stress on gear surfaces, improves transmission smoothness and service life, and is widely used in heavy-duty, frequent start-up, and complex working condition machinery.
Classification
1. By gear tooth structure:
- Barrel-shaped gear coupling (such as GIICL type, GIICL series): focuses on angular displacement compensation, suitable for complex working conditions.
- Straight-tooth coupling (such as CLZ type): simple structure, lower cost, suitable for medium and small power transmission.
2. By material:
- Cast steel coupling: high strength, suitable for heavy-duty applications (such as mining, metallurgy).
- Stainless steel coupling: corrosion resistant, suitable for chemical and marine environments.
3. By structure:
- Single-section coupling: used for short-distance connection between two shafts.
- Double-section (with intermediate shaft) coupling: connects two coupling sections via an intermediate shaft, enabling flexible connection of long-span shafts with stronger compensation capability.
Product Introduction
The barrel-shaped gear coupling (taking G II CL type as an example) mainly consists of internal and external gear rings, barrel-shaped gears, connecting flanges, sealing elements, and lubrication devices:
- Barrel-shaped gear design: the tooth crown of the external gear sleeve is barrel-shaped, and the tooth grooves of the internal gear ring correspond to a matching curved surface, allowing larger angular displacement (usually ±1.5°~3°) and reducing gear surface wear.
- High-strength structure: gear rings are usually forged from high-quality alloy steel (such as 42CrMo, 34CrNiMo6) and undergo quenching and tempering treatment to ensure high load capacity and impact toughness.
- Reliable connection: the half couplings connect to the shaft via keys or shrink-fit sleeves, and the flange plates are fixed with high-strength bolts to ensure transmission rigidity.
- Long-lasting lubrication: uses labyrinth seals or oil seals, internally filled with lithium-based grease or gear oil to ensure the gear pair operates under oil film lubrication, extending service life.
- Modular design: couplings can be customized with different sizes, tooth counts, and connection bore diameters according to user requirements to adapt to diverse working conditions.
Scope of Application
1. Heavy industry equipment: mining machinery (crushers, ball mills), metallurgical equipment (rolling mills, continuous casting machines), building materials machinery (cement mills, rotary kilns).
2. Energy industry: wind turbine gearboxes, auxiliary equipment in thermal power plants, nuclear power plant equipment.
3. Construction machinery: crane slewing mechanisms, excavator transmission systems, port machinery.
4. Other fields: large compressors, pumps, conveyor equipment, and other mechanical transmission systems requiring continuous operation and high reliability.
Working Principle
1. Torque transmission: the rotation of the driving shaft is transmitted through the external gear sleeve to the internal gear ring, which then drives the driven shaft, achieving motion and power transmission.
2. Displacement compensation:
- Angular displacement: the barrel-shaped gear surfaces allow relative deflection between internal and external gears during meshing, absorbing angular deviations through relative sliding of gear surfaces.
- Axial displacement: there is appropriate clearance along the axial direction between internal and external gears to accommodate axial expansion and contraction.
- Radial displacement: radial deviations are compensated by the staggered tooth movement in the tooth width direction.
3. Lubrication and balancing: internal lubricants form an oil film to reduce gear surface friction; high-speed couplings require dynamic balancing to reduce vibration.
GⅡCL Type Gear Coupling - Barrel Type Model Parameter Table
Model | Nominal Torque Tn (N·m) | Permissible Speed [n] r/min | Shaft Bore Diameter d₁, d₂ | Shaft Bore Length Y, J1 | D | D₁ | D2 | H | A | B | c | e | Rotational Inertia (Kg·m²) | Lubricant Amount (ML) | Mass (Kg) |
GIICL1 | 355 | 4000 | 14-35 | 38-82 | 103 | 71 | 50 | 2 | 36 | 76 | 8 | 38 | 0.0035-0.00375 | 51 | 3.1 |
GIICL2 | 630 | 4000 | 16-45 | 38-112 | 115 | 83 | 60 | 2 | 42 | 88 | 8 | 42 | 0.00550-0.00675 | 70 | 3.5 |
GIICL3 | 1000 | 4000 | 22-56 | 38-112 | 127 | 95 | 75 | 2 | 44 | 90 | 8 | 42 | 0.010-0.0113 | 68 | 7 |
GIICL4 | 1600 | 4000 | 38-65 | 60-142 | 149 | 116 | 90 | 2 | 49 | 98 | 8 | 42 | 0.02-0.0245 | 87 | 12.2 |
GIICL5 | 2800 | 4000 | 40-75 | 84-142 | 167 | 134 | 105 | 2.5 | 55 | 108 | 10 | 42 | 0.0378-0.0433 | 125 | 18 |
GIICL6 | 4500 | 4000 | 45-90 | 84-172 | 187 | 153 | 125 | 2.5 | 56 | 110 | 10 | 42 | 0.0663-0.0843 | 148 | 26.5 |
GIICL7 | 6300 | 3750 | 50-105 | 84-212 | 204 | 170 | 140 | 3.5 | 60 | 118 | 10 | 42 | 0.103-0.151 | 175 | 39.2 |
GIICL8 | 9000 | 3300 | 55-115 | 84-212 | 230 | 186 | 155 | 3 | 67 | 142 | 12 | 47 | 0.167-0.241 | 268 | 49.7 |
GIICL9 | 14000 | 3000 | 60-135 | 107-252 | 256 | 212 | 180 | 3 | 69 | 146 | 12 | 47 | 0.316-0.470 | 310 | 79.6 |
GIICL10 | 20000 | 2650 | 65-150 | 107-252 | 287 | 239 | 200 | 3.5 | 78 | 164 | 14 | 47 | 0.511-0.745 | 472 | 101 |
GIICL11 | 31500 | 2350 | 70-175 | 107-302 | 325 | 276 | 235 | 3.5 | 81 | 170 | 14 | 47 | 1.096-1.588 | 550 | 161 |
GIICL12 | 45000 | 2100 | 75-200 | 107-352 | 362 | 313 | 270 | 4 | 89 | 190 | 16 | 49 | 1.623-3.055 | 695 | 213 |
GIICL13 | 63000 | 1850 | 150-225 | 202-352 | 412 | 350 | 300 | 4.5 | 98 | 208 | 18 | 49 | 3.925-4.918 | 1019 | 315 |
GIICL14 | 100000 | 1650 | 170-250 | 242-410 | 462 | 420 | 335 | 5.5 | 172 | 296 | 22 | 63 | 8.025-9.725 | 3900 | 476 |
GIICL15 | 160000 | 1500 | 190-285 | 282-470 | 512 | 470 | 380 | 5.5 | 182 | 316 | 22 | 63 | 14.300-17.45 | 3700 | 696 |
GIICL16 | 224000 | 1300 | 220-320 | 282-470 | 580 | 522 | 430 | 7 | 209 | 354 | 28 | 67 | 23.925-29.1 | 4500 | 913 |
GIICL17 | 315000 | 1200 | 250-365 | 330-550 | 644 | 582 | 490 | 7 | 198 | 364 | 28 | 67 | 43.095-53.725 | 4900 | 1322 |
GIICL18 | 450000 | 1050 | 280-400 | 380-650 | 726 | 658 | 540 | 8 | 222 | 430 | 28 | 75 | 78.525-99.500 | 7000 | 1948 |
GIICL19 | 630000 | 950 | 300-470 | 380-650 | 818 | 748 | 630 | 8 | 232 | 440 | 32 | 75 | 136.750-175.5 | 8900 | 3026 |
GIICL20 | 900000 | 800 | 360-540 | 450-800 | 928 | 838 | 720 | 10.5 | 247 | 470 | 32 | 75 | 261.75-360.75 | 11000 | 3984 |
GIICL21 | 1250000 | 750 | 400-600 | 540-800 | 1022 | 928 | 810 | 11.5 | 255 | 490 | 40 | 75 | 468.75-561.50 | 13000 | 4977 |
GIICL22 | 1600000 | 650 | 450-680 | 540-800 | 1134 | 1036 | 915 | 13 | 262 | 510 | 40 | 75 | 753.750-904.750 | 16000 | 7738 |
GIICL23 | 2240000 | 600 | 500-770 | 680-800 | 1282 | 1178 | 1035 | 14.5 | 299 | 580 | 50 | 80 | 1517-1725 | 28000 | 10783 |
GIICL24 | 3150000 | 550 | 560-880 | 680-900 | 1428 | 1322 | 1175 | 16.5 | 317 | 610 | 50 | 80 | 2486-3131.75 | 33000 | 15015 |
GIICL25 | 4000000 | 460 | 670-1040 | 900-1000 | 1644 | 1538 | 1390 | 19 | 325 | 620 | 50 | 80 | 5174.25-7198.25 | 43000 | 24080 |
Keywords
GⅡCL Type Gear Coupling - Drum Type
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