Caixa de engrenagens planetárias para guindastes de rodas

The planetary wheel drive gearbox for wheel cranes is a sophisticated, compact transmission system engineered to deliver high torque multiplication and speed reduction directly at the wheel hubs, facilitating efficient propulsion and maneuverability in mobile crane applications. This planetary gearbox employs an epicyclic or planetary gear configuration, comprising a central sun gear that drives multiple orbiting planet gears mounted on a carrier, all enclosed within an outer ring gear. This arrangement enables coaxial alignment of input and output shafts, resulting in a space-saving design that integrates seamlessly with hydraulic or electric motors, while robust full-complement bearings absorb axial and radial forces exerted during operation.

In the context of wheel cranes, such as truck-mounted or all-terrain mobile cranes, these gearboxes are pivotal for wheel drives, ensuring stable traction, precise load handling, and enhanced stability on uneven or challenging terrains encountered in construction, mining, and heavy lifting environments. They offer significant advantages, including large torque capacity, high transmission efficiency, low-speed stability, and reduced noise levels compared to conventional caixas de engrenagens sem-fim or helical gearboxes.

Dimensões da tração planetária

Definições Técnicas

Símbolos	Unidades de medida	Descrição
eu	-	Taxa de redução
T2máx	[Nm]	Torque máximo de saída
T2p	[Nm]	Torque de saída de pico
T2maxint	[Nm]	Torque intermitente máximo
T2cont	[Nm]	Torque de saída contínuo
Pcont	[kW]	Potência máxima contínua
Pinta	[kW]	Potência máxima intermitente
n1máx	[rpm]	Velocidade máxima de entrada
n2máx	[rpm]	Velocidade máxima de saída

GR 80

Tipo	Exibição do motor. [cc]	Exibição total. [cc]	eu	Torque						Velocidade n2máx		Poder
				T2cont		T2maxint		T2p				Pcont [kW]	Pinta [kW]
				[Nm]	Δp [barra]	[Nm]	Δp [barra]	[Nm]	Δp [barra]	[rpm]	portata fluxo [l/minuto]
GR80-MR50	51,6	269,9	5,23	470	145	570	175	630	205	115	30	5,5	7
GR80-MR80	80,3	420,0		800	145	960	175	1060	205	68	30	5,5	7
GR80-MR100	99,8	522,0		800	115	1000	145	1310	205	55	30	5,5	7
GR80-MR125	125,7	657,4		800	95	1000	120	1500	190	45	30	5,5	7
GR80-MR160	159,6	834,7		800	75	1000	95	1500	145	33	30	5	7
GR80-MR200	199,8	1045,0		800	60	1000	75	1500	115	26	30	5	7
GR80-MR250	249,3	1303,8		800	50	1000	60	1500	95	21	30	4,5	6

GR 200

Tipo	Exibição do motor. [cc]	Exibição total. [cc]	eu	Torque						Velocidade n2máximo		Poder
				T2continuação		T2maxint		T2p				Pcont [kW]	Pinta [kW]
				[Nm]	Δp [barra]	[Nm]	Δp [barra]	[Nm]	Δp [barra]	[rpm]	portata fluxo [l/minuto]
GR200-MR50	51,6	319,9	6,20	560	145	670	175	740	205	98	30	5,5	7
GR200-MR80	80,3	497,9		950	145	1150	175	1250	205	58	30	5,5	7
GR200-MR100	99,8	618,8		1180	145	1420	175	1560	205	46	30	5,5	7
GR200-MR125	125,7	779,3		1450	145	1750	175	1920	205	38	30	5,5	7
GR200-MR160	159,6	989,5		1600	125	2100	165	2450	205	29	30	5	7
GR200-MR200	199,8	1238,8		1600	100	2150	135	2500	165	23	30	5	7
GR200-MR250	249,3	1545,7		1600	80	2150	105	2500	135	18	30	4,5	6
GR200-MR315	315,7	1957,3		1600	65	2150	85	2500	110	15	30	4	5
GR200-MR375	372,6	2310,1		1600	55	2150	70	2500	90	12	30	3,5	4,5

EH 210

Tipo		Peso		Quantidade de óleo		i (da÷a / De÷para)		T2máx [Nm]	n1máx [rpm]
		EH 212	EH 213	EH 212	EH 213	EH 212	EH 213
EH 210 S		35	40	0.8	1	11 ÷ 29	41 ÷ 129	3950	3500
EH 210 SC
EH 210 PD			-		-

EH 240

Tipo		Peso		Quantidade de óleo		i (da÷a / De÷para)		T2máx [Nm]	n1máx [rpm]
		EH 242	EH 243	EH 242	EH 243	EH 242	EH 243
EH 240 S		35	40	0.8	1	12 ÷ 31	45 ÷ 135	5600	3500
EH 240 SC
EH 240 PD			-		-

EH 350

Tipo		Peso		Quantidade de óleo		i (da÷a / De÷para)		T2máx [Nm]	n1máx [rpm]
		EH 352	EH 353	EH 352	EH 353	EH 352	EH 353
EH 350 S		55	60	1	1.2	15 ÷ 31	52 ÷ 135	7200	3500
EH 350 PD

EH 610

Tipo		Peso		Quantidade de óleo		i (da÷a / De÷para)		T2máx [Nm]	n1máx [rpm]
		EH 612	EH 613	EH 612	EH 613	EH 612	EH 613
EH 610 S		60	70	1.2	1.5	12 ÷ 31	47 ÷ 138	13500	3500
EH 610 PD

EH 910

Tipo		Peso	Quantidade de óleo	i (da÷a / De÷para)	T2máx	n1máx
		EH 913	EH 913	EH 913	[Nm]	[rpm]
EH 910 S		130	1	47 ÷ 131	24200	3500
EH 910 PD

Versão S

Tamanho	Dimensões
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 S	230	200	180 h9	190 h9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 240 S	230	200	180 h9	190 h9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 350 S	270	230	190 h8	200 h7	240	280	M16 n°8	M16 n°8	242	107	178
EH 610 S	260	230	190 f7	220 h7	260	286	M16 n°12	M16 n°16	243	72	171
EH 910 S	330	300	270 f7	280 h7	350	370	M16 n°18	M16 n°18	368	115	253

Versão PD

Tamanho	Dimensões
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 PD	230	200	180 h9	160,8 f8	205	240	M10 (8x)	M18x1,5 (6x)	210	140	70
EH 240 PD	230	200	180 h9	160,8 f8	205	240	M10 (8x)	M18x1,5 (6x)	210	140	70
EH 350 PD	240	209.55	177,8 h8	200 h7	241.3	280	5/8"-11 UNC (6x)	5/8"-19 UNF (9x)	285	107	178
EH 610 PD	260	230	190 f7	220 h7	275	310	M16 (12x)	M20x1,5 (8x)	293	72	221
EH 910 PD	330	300	270 f7	280 h7	335	375	M16 (18x)	M22x1,5 (10x)	368	115	253

Wheel Crane Planetary Wheel Drive Gearbox Advantages

1. Compact Design and Space Efficiency
The planetary wheel drive gearbox features a coaxial alignment of input and output shafts, allowing for a remarkably compact structure that saves valuable installation space in wheel cranes. This design reduces overall vehicle weight by up to 60%, enabling lighter support structures while maintaining robustness, which is essential for mobile applications where maneuverability and transportability are paramount.

2. High Torque Capacity
Engineered to deliver exceptional torque multiplication, often exceeding 70,000 Nm, this planetary wheel drive efficiently transfers power from hydraulic or electric motors directly to the wheels of cranes. It supports heavy lifting operations by providing substantial torque at low speeds, ensuring precise control and stability during load handling on uneven terrains.

3. Eficiência de transmissão superior
With efficiency rates surpassing 90% even at high reduction ratios like 70:1, the planetary configuration minimizes energy loss through even distribution of power across multiple planet gears. This results in optimized fuel consumption and reduced operational costs for wheel cranes, while maintaining consistent performance in prolonged duties.

4. Maior durabilidade e confiabilidade
Incorporating full-complement bearings and a modular planetary setup, the wheel drive planetary gearbox withstands axial and radial forces, ensuring long-term reliability in harsh crane environments. Its even torque distribution and rotational stiffness prevent premature wear, extending service life and minimizing downtime for maintenance.

5. Superior Shock Load Resistance
The multi-gear engagement in the planetary system allows for effective absorption of sudden impacts and vibrations common in wheel crane operations, such as those encountered during off-road travel or heavy load shifts. This capability protects internal components, enhancing safety and operational continuity in dynamic settings.

6. Improved Stability and Maneuverability
By providing stable traction and precise speed control at the wheel hubs, the planetary gear reducer enhances the overall stability of wheel cranes on challenging surfaces, reducing the risk of tipping during lifts. This contributes to safer, more productive operations, with features like low-speed stability and reversibility supporting intricate maneuvers in confined spaces.

Aplicações de transmissões planetárias

1. Construction Machinery
In construction equipment such as mobile cranes, excavators, and concrete pumps, the wheel drive planetary gearbox provides robust torque delivery and compact integration, enabling smooth maneuverability on rough terrains while supporting heavy loads and ensuring stability during lifting and positioning operations for enhanced site efficiency.

2. Mining Equipment
Utilized in mining vehicles like haul trucks, loaders, and drilling rigs, this planetary gearbox offers high reduction ratios and shock resistance, facilitating reliable wheel propulsion in harsh underground or open-pit conditions, thereby improving traction, reducing downtime, and optimizing energy use in resource extraction processes.

3. Agricultural Machinery
Applied in tractors, harvesters, and irrigation systems, the planetary wheel drive gearbox ensures efficient power transfer to wheels for variable speed control, enhancing field navigation on uneven soil, boosting crop yield through precise operations, and minimizing fuel consumption in modern farming practices.

4. Material Handling Systems
In automated guided vehicles (AGVs), forklifts, and warehouse robots, it enables compact wheel hub integration for agile movement in logistics facilities, supporting high payload capacities, seamless navigation in confined spaces, and automated workflows that streamline supply chain operations and reduce labor costs.

5. Setor de Energias Renováveis
Employed in wind turbine yaw and pitch drives, as well as solar tracking systems, the wheel drive gearbox facilitates precise rotational control for optimal energy capture, with its durable design withstanding extreme weather, contributing to sustainable power generation and long-term reliability in green infrastructure projects.

6. Automotive and Electric Vehicles
Integrated into electric and hybrid vehicle wheel drives, it provides efficient torque multiplication for improved acceleration and energy recovery, supporting eco-friendly mobility with reduced emissions, enhanced handling on diverse roads, and compatibility with advanced battery systems in the evolving transportation industry.

Tração planetária para caminhões articulados	Tração planetária para tratores de rodas de mineração
Acionamento por roda planetária para pulverizadores de lança	Tração planetária para rolos compactadores

Wheel Drive Planetary Gearbox Troubleshooting

1. Overheating Issues: Excessive heat in the wheel drive planetary gearbox often arises from inadequate lubrication, high loads, or poor heat dissipation, leading to degraded oil viscosity and potential component failure. To troubleshoot, monitor temperature regularly using infrared thermometers, inspect and replace lubricant as per specifications, reduce operational loads if necessary, and enhance cooling through better ventilation or auxiliary systems for sustained efficiency.

2. Noise and Vibration Problems: Unusual noise or vibrations typically result from worn bearings, misaligned gears, or imbalances in the planetary assembly, which can accelerate wear and compromise stability in wheel drive applications. Address this by conducting visual inspections for debris, checking alignment with precision tools, replacing damaged components like gears or bearings, and balancing the system to restore smooth operation and prevent further damage.

3. Lubricant Leaks: Leaks from seals or gaskets in the planetary gearbox can occur due to aging materials, improper installation, or contamination, resulting in reduced lubrication and increased internal friction. Troubleshoot by examining seals for cracks or wear, cleaning affected areas, replacing faulty seals promptly, and ensuring proper torque during reassembly to maintain fluid integrity and operational reliability.

4. Gear Wear and Damage: Wear such as pitting, gluing, or tooth fractures in planetary gears is common from overloading, poor lubrication, or material defects, causing inefficiency and potential breakdowns in wheel drives. Resolve by disassembling for inspection, measuring gear tolerances, replacing worn parts with high-quality equivalents, and improving lubrication practices to extend component life and enhance torque transmission.

5. Alignment and Installation Errors: Misalignment between the motor and planetary gear reducer or incorrect assembly can lead to uneven load distribution, increased stress on components, and premature failure in dynamic wheel drive environments. Correct this through precise alignment using dial indicators, verifying installation against manufacturer blueprints, adjusting fits and tolerances, and performing test runs to confirm proper engagement and minimize operational disruptions.

6. Loss of Power or Inefficiency: Reduced power output may stem from internal contamination, bearing failures, or hydraulic issues in the planetary system, affecting traction and maneuverability in wheel cranes or similar machinery. Troubleshoot by checking for contaminants in the oil, testing hydraulic pressures, replacing faulty bearings or seals, and recalibrating the system to restore optimal torque and efficiency for demanding tasks.