OTR is the abbreviation of Off-The-Road, which means "off-road" or "off-highway" application. OTR tires and equipment are specially designed for environments that are not driven on ordinary roads, including mines, quarries, construction sites, forest operations, etc. These environments usually have uneven, soft or rugged terrain, so specially designed tires and vehicles are needed to cope with them.
The main application areas of OTR tires include:
1. Mines and quarries:
Use large mining trucks, loaders, excavators, etc. to mine and transport minerals and rocks.
2. Construction and Infrastructure:
Includes bulldozers, loaders, rollers and other equipment used for earthmoving and infrastructure construction at construction sites.
3. Forestry and Agriculture:
Use specialized forestry equipment and large tractors for applications in deforestation and large-scale farmland operations.
4.Industry and port operations:
Use large cranes, forklifts, etc. to move heavy loads in ports, warehouses and other industrial facilities.
Features of OTR tires:
High load capacity: Able to handle the weight of heavy equipment and full loads.
Wear-resistant and puncture-resistant: suitable for dealing with harsh conditions such as rocks and sharp objects, and can resist puncture from sharp objects such as stones, metal fragments, etc.
Deep pattern and special design: Provides excellent traction and stability, prevents slipping and rollover, and adapts to muddy, soft or uneven ground.
Strong structure: including bias tires and radial tires to adapt to different uses and working environments, able to withstand extreme loads and harsh working conditions.
Various Sizes and Types: Suitable for different heavy equipment, such as loaders, bulldozers, mining trucks, etc.
OTR rims (Off-The-Road Rim) refer to rims (wheel rims) specially designed for OTR tires. They are used to support and fix tires and provide necessary structural support for heavy equipment used off-road. OTR rims are widely used on mining equipment, construction machinery, agricultural machinery and other large industrial vehicles. These rims must have sufficient strength and durability to cope with harsh working environments and heavy load conditions.
In general, OTR refers to a variety of specialized equipment and tires designed to improve efficiency and safety in harsh, off-highway conditions. These tires are designed specifically for demanding working environments and provide excellent durability and performance.
HYWG is China's No.1 off-road wheel designer and manufacturer, and a world-leading expert in rim component design and manufacturing. All products are designed and produced according to the highest quality standards.
We have a research and development team composed of senior engineers and technical experts, focusing on the research and application of innovative technologies to maintain a leading position in the industry. We have established a complete after-sales service system to provide timely and efficient technical support and after-sales maintenance to ensure that customers have a smooth experience during use. We have more than 20 years of experience in wheel manufacturing.
We have a wide range of business in industrial rims, mining vehicle rims, forklift rims, construction machinery rims, agricultural rims and other rim accessories and tires .
We also produce many rims of different specifications in the mining field where OTR tires are widely used. Among them, the 19.50-49/4.0 rims provided by our company for CAT 777 mining dump trucks have been unanimously recognized by customers. The 19.50-49/4.0 rim is a 5PC structure rim of TL tires and is commonly used in mining dump trucks.
Caterpillar CAT 777 dump truck is a well-known mining rigid dump truck (Rigid Dump Truck), mainly used in mining, quarrying and large earthmoving projects. CAT 777 series dump trucks are popular for their durability, high efficiency and low operating costs.
Key features of the CAT 777 dump truck:
1. High-performance engine:
The CAT 777 is equipped with Caterpillar's own diesel engine (typically the Cat C32 ACERT™), a high-horsepower, high-torque engine that provides excellent power performance and fuel efficiency for continuous operation under high load conditions.
2. Large load capacity:
The maximum rated load of CAT 777 dump trucks is usually around 90 tons (about 98 short tons). This load capacity enables it to move a large amount of material in a short time and improve work efficiency.
3.Sturdy frame structure:
The high-strength steel frame and suspension system design ensure that the vehicle can withstand long-term use under heavy loads and harsh environments. Its rigid frame provides good structural strength and stability, suitable for extreme operating conditions in mines and quarries.
4. Advanced Suspension System:
Equipped with advanced hydraulic suspension system, it reduces bumps, improves operator comfort, and effectively reduces load impact, extending the service life of the vehicle and its components.
5. Efficient braking system:
The oil-cooled disc brake (oil-immersed multi-disc brake) provides reliable braking performance and longer service life, and is particularly suitable for use in long-term downhill or heavy-load conditions.
6. Optimized driver operating environment:
The cab design focuses on ergonomics, providing good visibility, comfortable seats and convenient control layout. The modern version of the CAT 777 is also equipped with advanced displays and vehicle control systems, allowing operators to easily monitor vehicle status and performance.
7. Advanced Technology Integration:
The new generation Cat 777 dump truck is equipped with a variety of advanced technologies such as Vehicle Health Monitoring System (VIMS™), automatic lubrication system, GPS tracking and remote operation support to improve operating efficiency and maintenance management.
How does a mining dump truck work ?
The working principle of a mining dump truck mainly involves the coordinated action of the vehicle's power system, transmission system, brake system and hydraulic system, and is used to transport and dump large amounts of materials (such as ore, coal, sand and gravel, etc.) in mines, quarries and large earthmoving projects. The following are the key parts of the working principle of a mining dump truck:
1. Power system:
Engine: Mining dump trucks are usually equipped with high-power diesel engines, which provide the main power source of the vehicle. The engine converts the heat energy generated by burning diesel into mechanical energy and drives the vehicle's transmission system through the crankshaft.
2. Transmission system:
Gearbox (transmission): The gearbox transmits the power output of the engine to the axle through the gear set, adjusting the relationship between the engine speed and the vehicle speed. Mining dump trucks are usually equipped with automatic or semi-automatic gearboxes to adapt to different speed and load conditions.
Drive shaft and differential: The drive shaft transfers power from the gearbox to the rear axle, and the differential on the rear axle distributes the power to the rear wheels to ensure that the left and right wheels can rotate independently when turning or on uneven ground.
3. Suspension system:
Suspension device: Mining dump trucks usually use hydraulic suspension systems or pneumatic suspension systems, which can effectively absorb impact during driving and improve the vehicle's driving stability on uneven terrain and the operator's comfort.
4. Braking system:
Service brake and emergency brake: Mining dump trucks are equipped with a powerful brake system, including hydraulic brakes or pneumatic brakes, and oil-cooled multi-disc brakes to provide reliable braking force. The emergency brake system ensures that the vehicle can stop quickly in an emergency.
Auxiliary braking (engine braking, retarder): used when driving downhill for a long time, it reduces the wear on the brake disc through engine braking or hydraulic retarder, avoids overheating, and enhances safety.
5. Steering system:
Hydraulic steering system: Mining dump trucks usually use hydraulic power steering system, which is powered by hydraulic pump and steering cylinder controls the front wheel steering. The hydraulic steering system can maintain smooth and light steering performance when the vehicle is heavily loaded.
6. Hydraulic system:
Lifting system: The cargo box of a mining dump truck is lifted by a hydraulic cylinder to achieve dumping operation. The hydraulic pump provides high-pressure hydraulic oil to push the hydraulic cylinder to lift the cargo box to a certain angle, so that the loaded materials slide out of the cargo box under the action of gravity.
7. Driving control system:
Human-machine interface (HMI): The cab is equipped with various operating and monitoring devices, such as steering wheel, accelerator pedal, brake pedal, gear lever and instrument panel. Modern mining dump trucks also integrate digital control systems and display screens to facilitate operators to monitor vehicle status in real time (such as engine temperature, oil pressure, hydraulic system pressure, etc.).
8. Working process:
Normal driving stage:
1. Starting the engine: The operator starts the engine, which transmits power to the wheels through the transmission system and starts driving.
2. Driving and steering: The operator controls the steering system through the steering wheel to adjust the vehicle speed and direction so that the vehicle can move to the loading point within the mine area or construction site.
Loading and transport phase:
3. Loading materials: Usually, excavators, loaders or other loading equipment load materials (such as ore, earth, etc.) into the cargo box of a mining dump truck.
4. Transportation: After the dump truck is fully loaded with materials, the driver controls the vehicle to the unloading site. During transportation, the vehicle uses its suspension system and large-size tires to absorb the instability of the ground to ensure stable driving.
Uninstallation phase:
5. Arrival at the unloading point: After reaching the unloading location, the operator switches to neutral or park mode.
6. Lift the cargo box: The operator starts the hydraulic system and operates the hydraulic control lever. The hydraulic cylinder pushes the cargo box to a certain angle.
7. Unloading materials: The materials automatically slide out of the cargo box under the action of gravity, completing the unloading process.
Return to the mount point:
8. Lower the cargo box: The operator returns the cargo box to its normal position, ensures it is securely locked, and then the vehicle returns to the loading point to prepare for the next transport.
9. Intelligent and automated operation:
Modern mining dump trucks are increasingly equipped with intelligent and automated features, such as autonomous driving systems, remote operation, and vehicle health monitoring systems (VIMS), to improve work efficiency and safety and reduce the risk of human operating errors.
These systems and working principles of mining dump trucks complement each other to ensure that they can perform heavy-load transportation tasks efficiently and safely in harsh environments .
The following are the various sizes of rims that our company can produce in different fields:
Engineering machinery size:
| 8.00-20 | 7.50-20 | 8.50-20 | 10.00-20 | 14.00-20 | 10.00-24 | 10.00-25 |
| 11.25-25 | 12.00-25 | 13.00-25 | 14.00-25 | 17.00-25 | 19.50-25 | 22.00-25 |
| 24.00-25 | 25.00-25 | 36.00-25 | 24.00-29 | 25.00-29 | 27.00-29 | 13.00-33 |
Mine rim size:
| 22.00-25 | 24.00-25 | 25.00-25 | 36.00-25 | 24.00-29 | 25.00-29 | 27.00-29 |
| 28.00-33 | 16.00-34 | 15.00-35 | 17.00-35 | 19.50-49 | 24.00-51 | 40.00-51 |
| 29.00-57 | 32.00-57 | 41.00-63 | 44.00-63 |
Forklift wheel rim size:
| 3.00-8 | 4.33-8 | 4.00-9 | 6.00-9 | 5.00-10 | 6.50-10 | 5.00-12 |
| 8.00-12 | 4.50-15 | 5.50-15 | 6.50-15 | 7.00-15 | 8.00-15 | 9.75-15 |
| 11.00-15 | 11.25-25 | 13.00-25 | 13.00-33 |
Industrial vehicle rim dimensions:
| 7.00-20 | 7.50-20 | 8.50-20 | 10.00-20 | 14.00-20 | 10.00-24 | 7.00x12 |
| 7.00x15 | 14x25 | 8.25x16.5 | 9.75x16.5 | 16x17 | 13x15.5 | 9x15.3 |
| 9x18 | 11x18 | 13x24 | 14x24 | DW14x24 | DW15x24 | 16x26 |
| DW25x26 | W14x28 | 15x28 | DW25x28 |
Agricultural machinery wheel rim size:
| 5.00x16 | 5.5x16 | 6.00-16 | 9x15.3 | 8LBx15 | 10LBx15 | 13x15.5 |
| 8.25x16.5 | 9.75x16.5 | 9x18 | 11x18 | W8x18 | W9x18 | 5.50x20 |
| W7x20 | W11x20 | W10x24 | W12x24 | 15x24 | 18x24 | DW18Lx24 |
| DW16x26 | DW20x26 | W10x28 | 14x28 | DW15x28 | DW25x28 | W14x30 |
| DW16x34 | W10x38 | DW16x38 | W8x42 | DD18Lx42 | DW23Bx42 | W8x44 |
| W13x46 | 10x48 | W12x48 | 15x10 | 16x5.5 | 16x6.0 |
Our products are of world-class quality.
Post time: Sep-09-2024