A few days ago, a nine-gear transmission dedicated to mine Cars was independently tested by China National Heavy Duty Trucks Transmission . The gearbox was operating normally at the test stand, and the synchronizer shift test was completed on the synchronizer test bench. The range gears were switched properly. From August 2012 to March 2013, the Department of Transmission dispatched a total of four batches of engineers and technicians to visit the site of the vehicle to investigate the use of HOWO70 mine bully widebody vehicle gearbox. On the one hand, the transmission department speeds up the implementation progress of the quality improvement projects that have been verified and strengthens special training for service stations and teams; on the other hand, it deploys and guides engineers and technicians to speed up the special gearboxes for transmissions on the basis of prior investigations. Program demonstration and development process. The successful development of the nine-speed gearbox for the minecart will improve the quality of the HW gearbox, thereby enhancing the quality competitive advantage of the HW wide body mining Dump Truck, and will fill the HW series dedicated gearbox in the wide body mining dump truck. Blank space. There are many types of tractors, such as two-wheel (walking tractor) and four-wheel. It is divided into rear-wheel drive and four-wheel drive. Four-Wheel Farm Tractor,Mini Four-Wheel Farm Tractor,Diesel Engine Four-Wheel Farm Tractor,Four-Wheel Agriculture Tractor Zhengzhou Dongfeng Mid-south Enterprise Co., Ltd. , https://www.cn-dfmtruck.com
High horsepower wheeled tractor has better traction performance, suitable for high-speed operation of large farms equipped with wide-width agricultural tools.
Mainly includes engine, chassis, electrical equipment. The chassis includes a transmission system, a steering system, a walking system, a braking system, and a working device.
The tractor can drive by the power of the internal combustion engine through the transmission system, so that the driving wheel obtains the driving torque Mk, and the driving wheel that obtains the driving torque gives the ground a small, backward horizontal force (tangential force) through the tire pattern and tire surface, and the ground Facing the horizontal rice force Pk with the same driving force and opposite direction, this Pk reaction force is the driving force (also called feeding propulsion) that drives the tractor forward. When the driving force Pk is sufficient to overcome the forward rolling resistance of the front and rear wheels and the traction resistance of the farm implement, the tractor will move forward. If the driving wheel is lifted off the ground, that is, the driving force Pk is equal to zero, the driving wheel can only be idling in place, and the tractor cannot drive; if the sum of rolling resistance and traction resistance is greater than the driving force Pk, the tractor cannot drive. It can be seen that the driving of the wheeled tractor is achieved by the interaction between the driving torque driving wheel and the ground, and the driving force is greater than the sum of rolling resistance and traction resistance